What are you looking to do? If its flat, the xfs is the only consideration (from Rickter). Quality of the XS/DVX hulls is second to none, hands down. I've ridden all if the stuff out there, and IMO, the KDX/DVX is by far the best choice. They are the lightest, prolly the strongest, and assemble like a Superjet (everything fits). They are much easier to ride (for me) than the xfs. Some prefer the freaks as well. I owned (and learned to flip on) a carbon -4.3 freak and loved it, but its a different ride. The circus has replaced it for flat water use.
I rode the 1400 this weekend. It's nasty. Dangerous nasty. If you're not experienced, start with something around 900 ish. The big motors will hurt you. Footholds must be perfect to avoid getting ripped out, etc. its way easier to learn on a 900, and in a good hull, they'll do anything you want. More power is useless until you have the skills to use it. You'll just do bigger pancakes and beat your ski up more with big power