Agree with Dirtstiff on the VTX 1800, have one and really like it, most don't think it will keep up with the top bikes for quickness, but it is plenty strong enough for me. And yes soupbean I love the comfort of my F6B also and it is more than quick enough for me.
I had a 1500 Valkyrie. that thing was bad ass for 50 or so yards. Torque vs weight the thing would move. about the time it got moving good in 4th gear it was just out or a nice ride. I always figured all the low end power was because of he offset 6 degree timing gear they installed on Valk motors