M109 - Best V-Twin motor in the business. It rocks if you like the feet forward
position. Beware the cruiser clone versions...much heavier, thing is a boat
and the inertia and weight swallow the power of the motor (suzuki blew it
imho).
Star Line - Stratoliner, Roadliner, Raider...same motor, air cooled absolutely
stellar, huge, unbelievable torque. Very close to the 109 motor. Raider is smoking
(faster, must be a weight issue) but again feet foreward. The reason the
m109 motor gets the nod is that the 109 has gxxr technology in it and revs
much higher. The Star Motor has boatload of torque low though and it's
slightly bigger. Road/Stratoliner is like a couch, very very comfy.
Victory is a very close third motorwise IMHO (love the hammer). All their motors are
much stronger than a Hardley.
Kawasaki's new vulcan line looks nice and is very reasonable prices but the
motor is on par with a Hardley...you twist your wrist and start to yawn.
Also on par were the Honda clones, quality bikes but not a lot of go.