Well when buying used your buying a hull attached to a motor and it is the motor that can and likely will bust your butt. So is a search to find the hull you need with a GOOD motor. If your financing banks will only go so far back in years regardless if the motor is much newer and that is where the best prices reside. A good older hull with a newer motor. Folks cannot finance them so the price is lower.

Deep Vee is best but in aluminum used can be hard to find because most are 14 degree dead rise ( stern ) or less. 14 degrees is OK but below that your ride will suffer. 18 or better is best and in used boats the Thunderjet Luxor are around more than other brands. It makes a difference as I have a TJ Lux 20 and my brothers is a Duckworth Navigator, both have 150 hp motors, and in a run across the bay in 12 in to 18 in chop the Duck cannot stay with me and it is 14 degree dead rise.

Your on the right track searching around. Oh, Kingfishers are good boats but they are best well above the size your looking for. The smaller KF are not any better than a dozen other brands out and about. http://www.kingfisherboats.com/