There are three categories of road SMs
1. Low mtce trail bike conversions or in the case of the DRZ a factory version. Sumo experience in a easily accessible package. Fun, lower out right performance, generally a bit heavier, not happy cruising at 75 mph, unless it's a big bore with appropriate gearing (say XR600, DR650) then they are heavier again.
2. High performance dirt bikes. (KTM EXCs for e.g.) These are race bikes and many people forget that at maintenance time. The manufacturers make these as light and powerful as they can. Lighter AND more powerful than the above fitted with 17" wheels, sticky tires and an absurdly powerful front brake, most of us find them "distilled fun". (Do 75mph easy, but very unhappy to cruise there.) I'd suggest expensive oil changes every 500km (350miles?)
3. "The big Europeans" things like the KTM 690/640 and some Huskys (I think). Heavier enough to be different to "2" above, but similar in power due increased engine capacity. They will cruise on 75mph for longer than your average rider can stand the seat and vibes. (My 690 isn't bad, unless you have ridden a 4 cylinder street bike in the last year.) 5-10 000km recommended oil changes.
My favorite riding is on tighter mountain roads. Lower outright speed, less revenue based enforcement. Road imperfections are almost welcome!
A Supermoto is one vehicle for which speed bumps are not ironically named.
"Illegitimi non carborundum "
KTMs- '08 690Enduro (SM conversion) '06 450EXC '04 SX525 - Motard (Yee Ha)
'96 Suzuki Bandit1200S - ATS (All The Sh*t)
'08 YZ250F -MX raced so slowly, it's a sin
'73 Honda Z50 minitrail - Road legal, Vintage, Cool