Looking for used big capacity kayak

Hi Folks,
 I'm new around here and am looking to buy a big capacity kayak like the Prowler big game, Malibu X factor or anything else that can carry full scuba gear [ 2 tanks] and me....[ total 380 lbs all together]
Anyone want to sell their old kayak to raise funds for the purchase of the upcoming Trident?
Sincerely, Steve in Hayward

Thanks to those who sent me advice and pms.
 Especially Mooch...and w/ it all in mind, I settled on...and bought a Cobra  Fish n Dive yesterday.
 It holds 2 scuba tanks, weights, me and lotsa fish. Slower then those sleeker models I know... but spearfishers don't have to go out so far !
 Steve

Congrats Steve! Hope to see you out in the water soon. Hopefully, I'll get my wetsuite by year end (I know I said that last year ) - I've been getting an earfull from Stuart and Fuzz and I'm jealous about their spearo adventures