Yeah, Eon’s spot on. If you want a sportbike, get a Ninja 250 and get adjustable footpegs for around $120-130. The only issue with size on the Ninja 250 is length from peg to fuel tank. Your knee is supposed to fit under the top of the tank, but with my long legs (I’m 6’4″, thank you very much ) I couldn’t get my knees underneath. Adjustable footpegs fixed that by allowing me to lower the pegs by the inch I needed to get fit my knees in.
Honestly, while I loved the crap out of my 250, you do have lots of other options. Dual sports / motards are great for tall guys because, as Eon said, they tend to have high seats. You still have to go sit on them, as the high seat doesn’t always translate into lots of room for your legs. It all depends on where the pegs are in relation to the seat. All the “big four” Japanese companies have equivalent dual sports ranging from 250 supermoto bikes (tons of fun) all the way up to 650s. Try one out and see what you think.