I have recently started using Conjuration magic a bit and am trying to decide which I want to specialize in, summoning an atronach or raising the dead. i already read through the perks for both sides of the tree and I cant decide which I would prefer.

Any thoughts or suggestions or advice on this stuff in favor of atronachs or raised creatures?

I would go with atronachs

summoning creatures from oblivion is a lot easier than having to find a dead body, and by find I usually mean kill, not to mention you actually have to hit the dead body with the spell and in the heat of battle that might not be so easy. Dead thralls are limited to level 40 enemies and pale in comparison to the higher level atronachs (and are really weak compared to dremora lords).