I'm not familiar with the rampage but my guess is the difference will be a lot of modes and extras that you'll never use.
CCI stock class Phantom pump f/s. This thing is LNIB. Comes with stock magazine, extended magazine, barrel detent kit, crossfire lite up dot sight, velocity adjustment tool, 12 tubes even the barrel blocker
Ninja grey 50/4500 paintball tank f/s. Hydro good until 2019
Old school angel poppets/cup seals(LCD and A4/speed), spring detents(not sure which models) F/S