Which Duke to buy....why have I only just seen this list?
What do you want to know?
I've had a 749, 1098s and an 848 Evo...all fantastic bikes if your after a Superbike.
Corner on rails, sound AMAZING (you have to get Termis, it's mandatory), serving is same as any other bike, they look sexy as hell and they're one of the most engaging bikes i've ever owned and ridden.
My mate has just bought a a 796 Monster and is LOVING it, he's had Supersport's before and his last one was a MT-09, and he says this is the best so far.
Buy what ever suits you and enjoy.