I have a few questions about the differences between these bikes. I'm thinking about a 650R because I find myself wanting to do more adventure type riding than gnarly trails. I've had my 400 for 5 years now. I used to ride a lot of gnarly hills and trails in the Sierras and mix in some fire road. I had a XR250 for 4 years or so, then bought my 400 and absolutely love it. I used to push myself, climb hills and ride trails that were above my skill level. I'd fall off all the time trying, never really hurt myself though. Then I wiped out pretty bad at Hollister screwing around doing stuff I shouldn't have been doing and broke my collar bone in half in late 2003. Since then, my riding style has changed a lot, a lot more cautious, still push myself some when I'm in the mood, but I haven't laid my bike down since that last bad crash. I dual sported my 400 back when I first got it and have been enjoying riding asphalt roads in the Sierras more and more. I've done a few long adventure rides with a friend which included 50/50 paved road and fire roads to get to some pretty remote areas and those rides have been my favorite of all. I've been looking for a set of used Excel 17" supermoto wheels for my 400 for a couple months now. I'd like to do more road riding and would really like to do it with street tires and not 90% dirt knobbies like I have now. My best friend is buying a Suzuki DR-Z400 SM in the next few months, so there will be a lot of road riding after that and until he gets his second set of wheels just for dirt. Anyway, sorry to ramble, but my 400 is twitchy and revving pretty high at 55 mph or so. I really don't feel that comfortable on it on the street. I'd like to be able to relax a little more and enjoy the scenery but find myself hanging on real tight, gripping the tank with my knees really tight, and just not relaxed at all while at speed. I've been doing a lot of reading here and other sites, and I think for my style of riding now the 650R is exactly what I need. I love Honda's, the XR's I've had have been 100% reliable, very, very low maintenance machines. I've found myself wishing for more power with my 400 and have done all mods I can without opening up the motor, but still would like more. Don't want to do internal motor work because I do not want to sacrifice any reliability. I'd like to hear from those of you who have or who have had both of these bikes. It sounds like the 650R is around 20 - 25 lbs heavier, but I think I'll actually like having that extra weight for the street. From seaching and reading, it sounds like the suspension on the 650 is a little more up to date and better than the 400? Of course, the power and reliability is there with the 650. I've also seen many sets of used Excel 17" supermoto wheels for 650R's for sale. Then if I want to go ride at my local OHV park and climb hills and mess around, I can slap the dirt wheels back on the 650R and it will still be as good as my 400, and much much better than a 650L. Anyway, any opinions would be great, but I don't really want to hear about KTM's or Husky's due to cost and maintenance. Thanks. One more thing, I'm 6'2" 200lbs. When I went from my 250 to my 400, I didn't really notice any weight increase, but I did notice how much better the suspension and power was on the 400.