+1 on what the Dude said. Shopping for one will let you get a few rides or at least get to sit on one. Be aware that the RT and LT models are a bit top heavy compared to the other models. While the RT/LT models are nice for long rides(600+ miles/day), the RS, S and naked models are a lot more nimble and fun in the twisties.
I don't know how tall you are, but be aware that these are tall bikes and that has been addressed by the low seat option that is fairly common.
The triples are definitely more nimble, especially with the smaller fairings, but the power of the 1000's is a lot of fun, too. The 750 with it's balancer also runs a bit smoother than the 1000. If you can find one, the K100 with the four valve head is the best without going to the K1100. The more I ride mine the more I like it.