As Mikey and others have said, if just you, no problems, the F650GS will do everything you need and was in my experience more reliable, YMMV, just one of everything, nice and simple. Having said that mine to me and sone to south of France and Alps two up with camping gear, inc 80 on motorways, just would have been easier on the 1100! Sold mine with 45,000 miles on for a song, should have kept it, but needed the cash.
I've an 1100 for the last few years, but would happily change back to the 650. I think the issue is more of the perception of 'only being a 650', for new riders, shorties and girls. It's those things and a great around bike, and lots lighter for manovering around the garage.