i say go with the rebel because brass eagle has the worst reputation of all paintball products. you can get a j&j or CP barrel for about $50, shocktech drop forward about $35, 6 stage expansion chamber with fittings for like $40. After that you will have a nice setup. I used to have a Rebel and I had a 12" Teardrop on it. It shot pretty well but sometimes it did mess up. It was never hard to fix it though. Now I have my IMPY!
..... I say if you have to pick between the 2, go for rebel.