Any good airsoft guns?

im looking for an airsoft pistol that has an fps rating over 325 thats either spring or electric powered. i would also like it to have a hop up system(preferably adjustable, if not ok)and its color to be black and under around 50 or 60 dollars. if you know of a gun like this (if there are any) that isnt black or costs some over the price i said, still tell me about it.if you could also post a link to a good website that sells it that would be good too.if you dont know of any guns like this please tell me about any similar ones that you do know about.