Thomas,
I've had my 7800 for a couple of weeks now and am really glad I bought it. It has tremendous power for its size and doesn't feel like a first year model at all. To Henro's point it's really not, since its just a stripped down 2910, with the same engine and guts, just lacking the ratcheting links, adjustable suspension in the seat, tilt steering and cruise control (and probalby a few things I forgot). Like avorancher says, it almost has too much power. The first time I gunned it, I almost popped a wheelie (well, alright, I didn't, but it sure felt that way at the time). My old 1750, as great an old girl as she was (isn't your first one always the most special?), couldn't have done the things that the 7800 has done without hesitation or struggling.
Bob asked the key question - do you need it this winter? If you're going to plow snow and don't have any other option, then don't hold off, just because its a 'new' model. If, however, it's just going to sit in the barn all winter, then save your bucks until spring.
But, rest assured, whenever you buy it, you are gonna love it.
narcnh (who will be out playing, I mean working, on his again this weekend)