What Harley did you last have? I was a long time HD ride and sold my 15 CVO RoadGlide and got an 18 Multi. Power and weight is no contest, Multi is 400lbs lighter and twice the hp. I grabbed a handful of throttle with the wife on back, just like I would on the HD, to pass a car while in 3rd gear and 100mph flew past in the blink of an eye
Seating position was no big deal to get used to, other than no where to stretch my legs out front, but the seat itself leaves a bit to be desired. I keep sliding forward against the tank and it gets uncomfortable. I haven't swapped it out yet, figured I'd tough it out for a few thousand miles and see if it breaks in.
The ride quality with the active suspension is light years beyond the HD. My wife was concerned while looking at it but one ride and she was amazed at the smoothness over bumps the on the HD would have elicited sever complaining from the back seat. Her only issue is she can't duck her head around and look forward because the wind is too much and pushes her head back. That RG blocked a lot of wind. That said, it's still rock solid passing or being passed by semis.