I prefer playing CT on most maps. The TMP is a stunning weapon in the correct hands
I tend to join whichever team is being beaten if possible to help even things up.
Also there's nothing better than being able to "tease" the player you just killed who was trying to footsnipe you out the front door on Assault
However, most of the "rule breaking" on Assault happens on T so you have to spend a fair bit of time on that side to be able to see them.
Rob