Right now I have a Yama Fz6. I love everything about the bike; it's comfortable, good performance, sounds nice. The only problem is that here in a couple of months I am going to get hit with a jump in my interest rates from 5.9% to 18.9%. I am wanting to get rid of the bike for this reason, and since I will be getting a new bike I was wanting one with more performance, so I was seriously considering the 636. I am going to test ride one either Monday to Tuesday. I put over 12,000 miles on the bike in one year, so I like to ride. Most of my miles are highway miles. I am also 6'4, 240lbs so I am a big guy. I have heard that the 636 is not a comfortable bike for big guys. I want your opinions on the 636 for someone in my situation. Thanks! -Nick