I have no problems maintaining 80+ on the slab (I take the Springs Denver I-25 corridor frequently.) I am only 6'2 180 so there might be a difference is size. I got the 620 because if felt better and I was never going to 2 up. If you are going to do 2 up go for the 1000 else the 620 should be plenty ...

I am not a beginner (came back in the Spring after a long bike-less stay in the wilderness). I think the 620 is a marvelous ride around town and single touring. I don't need more HP or torque for the 70% in town 30% touring that I do. I corners great and is a blast. If you buy the 620 you'll save ...

I paid 7725 out the door last week in Denver for a Yellow 2006 620. I got it for just about 2 hundred over invoice + tax/reg. It had been on the floor a while so they were anxious to move it.

I hope you find what you are looking for at a good price.