I am dual wielding.

In my offhand I wear a Dwarven Dagger w/ cold enchant, and in my main hand I use a Schimtar (fine) w/ fire. I have taken one point in Dual wield flurry.

When I sneak attack, should I use only dagger attack to get "Backstab" or should I use a power attack with both hands to get a "double sneak attack, i.e Sneak attack for 30x damage (x2)?

Should I be swinging left, right, left, right or should I press both buttons at the same time?

What kind of weapons is best to combine?

I am level 22 khajiit "rogue".

get tons of stamina and dual-powerattack-rofl your way through all enemies.

for sneaking would i use only 1 dagger for the animation. wearing 2 doesn't give you one i think

Yeah use daggers for sneak attacks the dps from it 1 hits most things.

Personally I'd use only the dagger for sneak attacks as when you dodging in and out of combat you want something with a bit more range to get your hits in. Going in with a dagger against a 2H wielding opponent leaves little room to dodge (I presume your light armoured).

Use power attacks sparingly or when you opponent is down (eg after Unrelenting Force knocks them down) if you have low stamina. Light Armour has perks that increase stam/regen so later you can spam power attacks quite regularly. Just make sure not to do it when 5 guys are about to hit you in the face with hammers as you cant dodge when doing them.

I hate to answer a question with a question, but I've been wondering WHICH is the "main hand" and which is the "off hand"? I have never understood this.

For me the mainhand is the right-hand, since I'm right handed.

So - I use regular attacks mostly, and use dagger for sneak attack? And dont use pwer attacks unless guaranteed to hit?

There isn't one I think, in terms of stats and dps if that what you mean as they're equal in that regard. But generally speaking I'd say the right one is as you cant go sword and board with shield in your right.

right hand = mainhand, left hand = offhand.

because right = weapon and left = shield(that's where it comes from i think)

Right is main, as torches and shields automatically equip to the left, or blocking hand. You can equip a single one handed weapon to the right, and attack or block, or to the left, and use weapon attack and hand to hand.

Ah, thanks for clearing that up. Makes sense.

The right had also swings about 15% faster than the left hand. The DF perks can really increase their speed. Some daggers are not affected by the perk. Ebony daggers are NOT, neither is the Blade of Woe. Dual Savagery is a powerful choice. Especially if you have Assassin's Blade. It will also work well with your dagger/sword combination. Whick, BTW is not a bad way to go.

Enchanting that dagger with Paralyze will keep an enemy on the ground.

The thing with duel wield is that without the perks that speed up attacking, it's not much different than going one handed. The only exceptions to this is when pressing both buttons at the same time. Either for the normal double attack or the double power attack.

Since otherwise you can only swing with your left or right hand.

As far as sneak goes, having a one handed blade (dagger or sword) will let you slit throats but only the dagger does it without making a "sound" and only daggers get the x15. If you duel daggers and double attack, you get mainhand dagger x15 plus offhand dagger x 15 combined for damage. If you have the DB, then that is MHx30 + OHx30 = anything dies from the physical damage alone.

I have the DB gloves that doubles sneak attack damage, so I can one-shor Giants with a dual wield power attack with the MHx30 + OHx30.

So the difference is that with Daggers, other enemies won't get alerted when someone dies?

so i believe for the highest dps, you want a dagger in left and a mace in the right
the left hand determines speed, you'll be attacking with the right far more often - you have to open your combos with rR.
r = right hand attack
R = right hand power attack
l = left hand attack
L = left hand power attack

http://www.youtube.c...h?v=v8uoGSP-27I
dual flurry doesn't really help much if you use frame cancels. especially if you use the dagger mace combo. attacking with both is suboptimal in terms of attack damage. it is easier to execute. note that the rR-rrR and rR-rlL combos will permanently stagger an opponent. so the paralyze enchantment becomes a judgement call. in the video, he pauses between each complete combo for clarity. in the game, you can link them non-stop. note also that the number of swings does not represent his hit count - the sound of the blade hitting ralof indicates his hit count.

the enchantments you want are absorb stamina as a priority and absorb health or paralyze, depending on your survivability. the absorb stamina is critical in chaining the combos, making elemental fury nearly useless.

sword and board users will also have the rR-rrR combo, except no dagger speed for maces.

this will also depend on your skill. my personal success rate of dual wielding with the rR-rlL combo is 50%. my rR-rrR combo on sword+board is 80%. also, the sword+board rR-rrR combo can be easily done in 3rd person. almost all the dual wielding combos, in order to time it correctly (to the frame), will need to be done in 1st. while it's entirely possible to do it in 3rd, the observed delay will cause discrepancies.

If you sneak up behind and slice the throat of one bandit with a dagger while another is across the room with their back turned, they won't even notice you (depending on sneak skill).
If you do the same with a sword, even if your sneak is 100 with all the perks, the eye will open slightly and the other bandit will turn to investigate.

As for the rest...

http://www.uesp.net/wiki/Skyrim:Power_Attack#Power_Attacks

A duel power attack (pressing and holding both buttons) will to x3 where all others are x2.
The main hand attacks 15% faster by default over your off hand.
Attack speed of your duel wield attack (when pressing both buttons) is determined by the off hand weapon. So if you put a dagger in the off hand, and a mace in the main hand, don't expect to swing the mace by itself as fast as a dagger.
The perk that speeds up your attack speed when dual wielding will do so even if you are only swinging just one at a time.

Swords for enemys that dont have armor (animals ect), Maces against things that use armor/dragons/bandits and the like.