I've played with a Genisis last year. Nice blowback gun. Easy to shoot, nice crisp trigger.
You'll like the performance, trust me. Easy to maintain, and nice shooting gun.
ADDED BONUS POST
Ok, I'm looking at the player pack now, some opinions :
Genesis : Get a tank for it
JT Goggle System : If you don' thave goggles, you'll need these. Otherwise, sell 'em to a newbie.
VL Proflex Squeegee : Not the best, but it will work. Mostly. Stick squeegies work better in field.
VL200 Count Hopper : Get a motorloader.
Paintball 101 video : Cheezy video, but fun for 15 minutes.
and Barrel Plug : You need this too, don't lose it.
-Tyger