If I were in the running for a new machine this year, it'd be an xf1100 non turbo. Not interested in the extra heft and complications of a turbo, and currently I have an 09 cf8 which I really like, but just think its time to go 4stroke. I do wish that cat would bump the power of the 1100 a bit to maybe 130 and work on a better exhaust tone for the 4 stroke. I guess maybe it is changed, I havn't heard one of the procross 1100s running yet. Maybe now in the racier chassis it will be perceived and marketed differently from in the twin spar chassis. Cats 2stroke fuel/oil consumption stats definetly play a part in my thinking too, if they were a little easier on the oil and gas I'd maybe lean toward 2stroke a little more than I am.
Another point though is that the current 800 ho is 163 or so in power to my 2009 which is the 140hp version. I forgot the power difference is more like 40 hp from 1100 4s to 800 2s and less weight with 2s... I could probably give up 15 ponies to the 1100, but if I were used to riding the ho it'd probably be tough to go that much in that direction.
I've also been wondering if the electric start has been beefed up for 4stroke machines, I don't think any 4s sleds have pull ropes, only electric start, and it seems every 2s sled I know of with elect start is either glitchy, was broken, or is broken. Starters always seem to be out, ring gears chipped and flex drives seem like a bad idea from the get go. I do understand the harsh conditions for an electric motor though... moisture/corrosion/temps, vibration... My girlfriends sabercat has less than 2000 miles on it and sometimes elec start works, othertimes it just makes noise. Haven't been concerned enough about it to fix it because it has a rope to start as well.