Best engine size for two-up riding?
In short, I'd like to get a bike for two-up riding with my wife and have ruled out my beloved Sabre because of insufficient seat size, too low of a 5'th gear and lastly...I just don't think that the 1100cc engine is big enough for us! Here is a list that I tried to compile of the 4 Japanese cruiser/tourer engine sizes and let me know if I missed any. Some sizes are rounded off and some aren't.
Honda: 750cc, 1100cc, 1300cc, 1800cc, 1832cc Wing
Yamaha: 650cc, 1100cc, 1300cc(V4), 1670cc, 1854cc
Kawasaki: 900cc, 1500cc, 1600cc, 2000cc
Suzuki: 800cc, 1360cc, 1500cc, 1800cc
Which engine size, (irrespective of other considerations,) do you think is ideal for two-up riding power-wise? All opinions are welcome.
*** P.S. We're both of moderate weight.
Pleasure is directly proportionate to risk, and motorcycles are inherently pleasurable.
H. L. Altimus
2003 VT1100C2 Sabre