ok well im looking into a new amp and i dont really have much money to spend becuase i know my parents would get pissed off well anyways im looking for a good strong amp with a good sound but im not looking to spend a fortune so if you know of any good amps 300-500$ gig worthy say so right away and ill look into them

good rock/metal
50 watts or higher
gig worthy
good quality(sound, durability)
Peavey ValveKing. Its only 399 for the 50 watt version and pretty versatile. Is ebay an option?
My Gear:
Black ESP LTD EC-1000
Fender MIM Strat
Peavey XXX 40
Boss NS-2