I'd ridden a couple of Dukes for work (999, Multistrada) but I'd never once considered buying one, or any twin for that matter. The MStrada was a bit of a laugh but the 999 I found a bit bland and, well, just not very exciting - preferred the SV1000 to ride.
I'd been abroad for a while and RSVs had just passed me by. Then one day, a mate brought his round and insisted I take it for a spin - and it was awesome - I was completely smitten. Did a bit of reading up, saw the magic words 'Rotax engine' and ended up buying the same bike six months later, having flogged my Jap4.
Those latest Dukes look really nice but I just would never consider one for the amount of time they spend in the dealer's.
Nothing I've ridden recently has impressed me like my Mille - the only thing that came close for fun and 'character' was a mate's Speed Triple with loud pipe - and now even he's gone out and swapped it for a brand new 2no!
If you want a reliable, reasonably cheap to run V-Twin, there simply is nothing to touch the 990s at the moment.
But for the same reason I won't be buying a Duke, lush though it is, I don't think I'll be buying an RSV4 either - at least not a five-year-old one, which is what they'll be when I can afford it!