Good writeup, cheers. The 890 will feel higher as it will sag less under your weight. First thing i noticed when changing my 790 suspension was the bike sat higher, and the suspension worked instantly, not the soft initial soft sag. I do trackdays with 2 mates on 1299S, so extra power won't help me other than down the straight, and i do back road riding with a 939SP and a couple of Husky Nuda's, the 790 now with the better suspension pushes those guys hard, they can't get away from me. So the 790 has enough power. If id never had the 790, then sure id get a 890. But with the 1290GT and my Multistrada, i don't need more power, i did need better brakes (pads) and better suspension, i now have both, and love my 790. I think if i was to change, id go for the new 1290R, and maybe trade the 790 and the GT.