I've gotta go with the rotor, if i've made the best decision in paintball it was to get my rotor.
I've had it since i started (give or take a month or two) and it's not failed me at all.
I've changed the batterys about 5-6 times?
I've been playing for about 1 and a half years. About every weekend to every other weekend.
Unlike others, if a ball has broken inside due to being knocked around rather than freak out about cleaning it, its a shove in the sink (or pour some water in it after taking the battery pack bit out in about 5 seconds) and it's back and ready to go.
It's SO light and looks pretty damn sexy as you can even make it suit your look with fancy little colour kits.
Works with woods aswell, get a larger top for it to hold 250 balls , Can't match 400, but i'd prefer to stay in the game than getting pulled out for that stupid shot on the hopper, and even get the woodlands colour kit.