1500 vs 1800 ride
A few months after I bought my first 1800 (01), I swapped bikes with my die-hard 1500 friend for a short ride. That was a miserable ride for me, after just dismounting an 1800. When I twisted the throttle on the 1500, it seemed the bike got slower. When applied the brakes, the bike seemed to go faster. When I made a turn, it seemed the bike would not make it. We arrived at Ron Ayers Motorsports in Greenville, NC, (My hang-out) and parked our bikes. In the meantime, as I was telling him about my horrible experience of riding his 1500,I looked up and he was nowhere around - he was inside, dealing for a new 1800. That's the way it really happened.
After that, I went to a Harley Ultra following knee surgery. Bought an "inexpensive" used 1500 later on, as a second bike to please my wife. Sold it and bought another used 1500, then triked it out. Sold that, bought a new 08 Wing/Champion trike, and then a used 05 Wing as a second bike.
At some point, I sold my Harley to a gentleman named Joe in Montana.
After all this: I would like to have another Ultra as a third bike, but not a 1500.
I know this is "too much information!" But, a possible answer to your question: ALL OF THE BIKES WERE COMFORTABLE TO ME!!!! For me, the 1800 HANDLES best; next is the Harley, last is the 1500. The 1800 trike gets more attention from the public (pretty ladies) than any other bike that I have owned.
Merry Christmas!!!! And a joyful life in the Savior of Men's souls.