There is an excellent thread today dealing with the one-handed skill and its weapons and perks; I learned a lot from that thread and I want to start one on blocking and its perks.
So which perks do you all think are worth taking and which not?
I wonder is the one that mitigates arrows worthwhile? So far I can rush them easy enough and even dodge a couple of arrows; so doesn’t seem worth taking. But I’m still at a low level and havent come up against any really dangerous archers.
How about power bashing?
Anyway, all opinions whatsoever welcomed

Essential block perks, in my opinion, are Quick Reflexes and Block Runner. Block perks that I find very useless is pretty much the whole right side of the tree. Power Bash is too slow to initiate which means that it's difficult to land without getting hit. Furthermore, if you meditate on Fus the difference between a Power Bash stagger and a normal Bash stagger is negligible. As for Deadly Bash, personally, I find that Bash damage does not really compare to the damage you can inflict with your weapon and thus find the additional damage to be negligible. The Disarm perk is chance based and requires a Power bash, so I'm not a fan of it.
While Shield Charge is useful, I personally find it to trivialize most melee combat in the sense that you can shield charge nearly any enemy in the game, a shield charge that basically acts as a melee Fus Ro Dah, and then just spam the crap out of them. In other words, it's very useful, but I don't find it to be of much fun.
I find Block Runner to be useful because it pretty much eliminates the penalties of blocking. You can now use block without it interfering with your footwork. This goes hand in hand with Quick Reflexes because Quick Reflexes is pretty much there for everything that you normally can't dodge with regular movement (Things like Bear/Sabre Cat/Chaurus/etc. leap attacks, forward humanoid power attacks) and makes some things that you would normally be able to dodge much easier to deal with (Dwarven Sphere blade leap attacks, Dual-wielding power attacks, etc.). In the case of Dual-Wielding power attacks, it will last for quite a while allowing you to quickly dispose of a fair amount of enemies while they're in slow motion and you're not.
As for the Deflect Arrows perk, if it wasn't a pre-requisite for Block Runner, I'm not sure if I'd get it. The area for which a can shield deflect an arrow isn't that big. Also, it seems to be bugged or improperly worded as it does not completely eliminate arrow damage, it just reduces it (By a large amount). I'd have to test if it actually reduces it by the same damage as normally blocking an arrow without the perk or not. Aside from that, the arrows deflect off of your shield and you can pick them up if you want to.
Elemental Protection is good for dealing with things like Dragon breath and magical damage and it stacks with magic and elemental resists. Solid perk to add another layer of defense versus elemental damage.
Just my two cents. o.o