Jeff,
We have three FST's in my family, all 06's. I would say if you want four Stroke I would recommend Yamaha. (we have a Vector as well)
Cannot get parts, on back order, all in shop many times in last two years for various maladies, all with less than 3k miles on them. Great when they run.
One was a leftover purchased in 2009, in shop 8 times, some items such as known issues (jackshaft cover etc) Poo would not cover. Poo covered a new wiring harness on one of them, dealer pulled engine to replace, did not mount back in properly. Found this out from another Poo dealer after sled was in shop two more times. Poo would not cover the issue, and told us to go after the dealer that did the first repair under warranty. That sled still has less than 500 miles on it.
My FST is down right now, needs a fuel pump, cannot find one, on back order from Polaris, poo says supplier issue, current ETA Feb 25th, subject to another extension.
I can go on, and I am sure I will catch heck for my post, we have lost all faith in Poo.