Seriously! W.T.F. do you base the highlighted comment on? I'm riding around on a stinking little 250 that's only air cooled and run it down the highway all day long at 65 mph. :eek1 If I'd had been able to afford to buy another DR650 with the insurance money from my stolen 09DR650 I would have and it would have been my fourth. The DR will run down the highway all day long at 75 and not even breath hard. To the O.P. If I had your height, I'd go with the DRZ400S because it would fit you better and have a better suspension out of the box. (compared to the DR) Both DR and DRZ need aftermarket seats for candy asses and maybe, a small shield to deflect some wind for hwy stints. Either will do hwy speeds with ease, all day long. (I mean, if my 250 can = W.T.F.!?) As for the rider being able to tolerate those hwy speeds = if you aren't a pussy that's acclimated to fairings and cages, you shouldn't have any issues at all.