What type of water do you run?
What features are important to you? Cabin(nonexistent in a small cats)?
Speed(Cats will crush Vs)?
Give us more details on what you are looking for in your next boat.
The Fountain is a better build and handleing then the Baja, but is smaller.
The Eliminator is a better boat then the AO - performance, build, etc.
Single is more efficient then twins in most cases, but with twins if one breaks you can still limp in.
Don't forget Warlock. They build cats and V's.