GS compared to R
Just noticed this subforum, and for the time being I have a '14 GS and a '16 R although I consigned the GS to the dealer two days ago to sell.
For me it's not very practical to try to keep and ride both bikes so I've decided to sell the GS. My GS is well out of warranty with 52K miles but has served me well with nearly zero off road miles. I'm long-legged and fit the GS nicely, and its weather protection is fine for my dry-ish and warm riding area. But, I found a used R at a decent price so I bought it with 8K miles on the odo.
I like the R's shift assist but don't really notice the improvements in ESA and ABS. Clearly it's lighter and peppier and is a little better in the twisties. I've added BMW's tall windscreen and tall (not sport) seat attempting, successfully, to improve its "touring" comfort. For all those reasons the R is the keeper.
As soon as I owned the R I started to raise its seat height. I tried BMW's Sport (highest, 840mm) seat and the "high" 820mm seat. So now I have three seats including the Standard seat. My choice now is to keep the 820mm seat due to its shaping and sufficient height. Although I have a 34" inseam I've never really had a problem with knee-bend on non-GS BMW's. So the R is fine for me, although earlier I didn't imagine it would be as good as it's turned out to be.
Gone: '14 R1200GS, '13 K1600GT, '08 R1200RT, '04 R1150RT, '05 R1200GS, '73 R75/5.