For your price range, I would suggest, ranked in order:
Etek > Axe > eXTCy*
(*MUCH cheaper than the other two but, regardless of what all the SP-haters say, GoG makes quality shooters)
Any one of them will serve you well.
Just saw the part about also needing a hopper and tank. Get the eXTCy at $250 and you've still got plenty left for the others. My whole team shoots Rotors, but you could easily get away with a cheap Halo (or I'm personally quite partial to the Fasta).
Last edited by Murf425; 10-14-2012 at 06:37 PM.