Never owned one but rode my buddy’s back in the early 90’s. I remember it was pretty fast as long as you just wanted to go straight. It was heavy and I didn’t care for the way it handled curves. I only had it up to around 150 ish before I chickened out and slowed down. Didn’t really do anything to impress me enough that I’d ever want to own one.

I don’t have numbers or facts to back anything up but I’d be surprised if a current 600CC sport bike didn’t have better acceleration if for no other reason than power to weight ratio.

To each their own though. It’s not my thing but I if it fits what you’re looking for then go for it.