I have found since owning my 2011 ultra, that I still prefer to stay off the busy fast pace of highways and interstates roads. Bike handles great but I prefer the 55 mph - 65 mph riding. It's more enjoyable. May take more time getting there but that's the point. Enjoy the ride, get off the interstates and see the backroads and small towns.
I love the long, winding, lower speed, back country, foothills up and down the mountains type of riding - but - in order to get there it seems I gotta beat it down some dang highway doing 75-80 to keep from getting run over. I look forward to getting out of Jersey some day to exit this rat race!
My RK handles ALL of it no problemo! Great 2 up cruiser as well as 2 up la-ti-dahing around the twisties!!
Depends on the bike. My current steed....superslab is sweeeeet! Slow is ok too but man tourers are righteous on the freeway, especially with the 6 speed!