reloader all the way, they will not spin when other people are shooting. Trust me, have 10 tippmanns shooting next to my hopper and only agitated when i fired. I used a revvy on saturday bc i didnt wanna use my empire bc i accidently put one of my broke balls in there and it got some paint on my other paintballs that were already loaded. So i used the revvy, battery door flew off when my finger hit it when i was trying to tighten the hopper down. I had to hit the lid to get it to lock which i was afraid i was going to break the hopper by doing so. Playing speedball with a revvy on my nexion=bad idea, whenever i tilted the gun to snap shoot or to move up. The fluckin thing would agitate pushing my balls around. AS i got low on my hopper the paint would just fly around so i had to turn it off and let the paint feed manually. I love my empire, stronger,better battery life, faster (had my empire going 15bps full auto) and usually cheaper than the revvy. And about empires being in the shop being fixed more? weird every time ive gone to my proshop somebody has always been there to get a xboard replaced, and have yet to ever see a reloader there, or have heard any complaints about ppl with them from the owners.