spyder tl
I think that a spyder TL Plus is a great gun for that price range if you get it, i would suggest making even better. I have a TL Plus and about 600 dollars put in it,
get a x chamber
get a regulator
get grips
get a better sight
power feed
elcd trigger frame
new springs
new trigger job (not needed, makes looks better)
new grips (for better look)