Riding the piss out of a Duc is like getting kicked in the nuts. Repeatedly. But theres something so addicting and satisfying. If you are going for lap times, the R1M will be faster in most peoples hands. Going for fun/enjoyment, the Duc all day and twice on sundays.
sell them both and buy an R6 and a hundred sets of sticky Pirellis, ride a bunch of different tracks, and learn how to be real fast. Waaaay more fun than buying 1500$ gas tanks.
Well, I tied the vote at 13-13. I say 1299 since you already have it. Unless you yardsale it, you can always change your mind and go the R1 route down the line. Alternatively, it would be a lot harder to go back to the 1299 if you went with the R1 and regretted it.
This is another reason I've considered the R1. While it is fun, It's a lot more work to ride the Duc than it is the R1.
FTFY I like the R6 suggestion (or throw in the SV song of my people) despite having voted for the 1299. Btw spare tanks can be found for couple hunnit