Try a Yamaha T Max if you can. It's a twin cylinder 500cc engine and is fast and smooth. 15" wheels and great brakes. Lots of good choices out there but I am really impressed with my T Max. Same front brake calipers as my R1 and Super Tenere and it's a very solid chassis with very good suspension. Handles well, is stable in the twisties. Easily will cruise at 75 mph and about 50mpg+. Good luck.