Verified answer

My favorite solos are in:

Impulse, We Three Kings, Tom Morello Guitar Battle, Slash Guitar Battle, Cult of Personality and if you're really good The Way it Ends.

I like the solos on Cult of Personality. They require you to move your fingers frantically up and down the buttons, but without it being crazy hard.

Well my favorite solo is the one in "Talk Dirty To Me" by Poison.

But for DLC's, Get Airbourne's "Too Much, Too Young, Too Fast."

Guitar Hero sucks, go buy rock band.