I've seen a some of reviews on them and both are a bargain, you couldn't go wrong with either.
You'd buy the fz09 over the fz07 because of the extra power and when I say extra power I mean a shit load. It has about the same power to weight ratio as a 600 Supersport, but a ton more torque.
The fz07 has it's has it's benefits too. It gets almost 60mpg, a little lighter/smaller, and a more upright riding position. It's still no slouch on power either, about 75hp/50tq.
Both bikes are under sprung. If you are planning on doing anything more then commuting/sprinted riding, you will be looking to upgrade it.
If you're doing a lot of highway commuting, get the fz09. If you're doing a lot of in-town commuting get the fz07.
That's my 2 cents.
Me personally would buy the fz09 in a heartbeat!
