I bought my �08 M50 in March and logged close to 5000 miles on it already. This bike is really comfortable to ride for me and my passenger. My wife and I have done a few 200+ mile trips and we have no complaints. My wife is not petite and has had two back surgeries - the last including two rods in her back. That's got to say something for the smooth ride of the M50. The only things we will probably change are the seats; something with studs to match everything else we've added.
The M50 does have a hard time catching up with the bigger bikes, but that�s to be expected when you are comparing an 800 to a 1500 or more. Once you're caught up there's no problem keeping up. I don't really care for the drum break in the rear, but it's fine after you get used to it.
My only regret is not going bigger; maybe to a C90T or the C109RT.