As for the wake I don't no they have similar hull designs so somebody else will have to answer that.
What to look for check the hull if there are lots of dings in it and dock damge it shows about the owner. Also look at the prop, rudder, strut, and tracking fins. If they are dinged then it means something was hit. There stringers would be my next area. Tighten the motor mounts with a wrench if the bolts spin as if they are not grabbing the stringers are shot. Also you can do a simple knock on them with your fist if they sound dull they might have rot or water in them. If they sound solid they are probably good. Finally, ask for any maintence records, if the owner keeps detailed records it means they care about the boat. Good luck with your decision they are all good boats.