Archery:
Pros- let's you move enemies around without being noticed. Sneak attack multiplier.
Cons- a little too strong, monotonous
Destruction:
Pros-fun, harder to use, awesomeness
Cons-no sneak attack multiplier, instantly detected when using
I am leaning toward destruction because I just like it more, the only problem is that using arrows to move my targets to where I want them is a very big part of how I play an assassin. The only way to replicate this is with the throw voice shout and since I will be roleplaying I won't be getting this for a while.
So give me your opinions and help me decide.