I sat on an R1100S and it doesn't solve my hip issue...not a particularly narrow tank. So far the 675s seem to be pretty well behaved. There is an active board (
www.triumph675.net) and most are enamored. It might fit me like a glove. Or not.
What's somewhat odd is that a number of people have ridden both the 620 and 1000 MTSs and ended up prefering the 620. Not sure if it is the 30lbs lighter or 1 inch lower or what. I'm going to test ride both back-to-back, so that should inform me.
Falcos are a little tough to find. Just missed what looked to be a clean one on eBay...went for $6100. I haven't been able to find a falco to sit on yet though.