LS3 Cam upgrade recommendations
 

I just bought a C6 LS3 Corvette. I plan on doing a lot more but to start I was thinking about a head and cam swap. Heads AFR cnc heads...but cam I have no clue where to begin.

I'm looking for a cam that's not too rough. I've seen some that are sick and it sound like the motor is on the verge of dying. What do you guys think?