The bikes can be improved a lot by fitting longer rear shocks and doing some fork work.
Progressive suspension sells shocks in half inch steps.
My 2009 1200 low came with 11.5 inch shocks and I went to 13 inch long shocks.
That gives a LOT more travel, and some real damping.
It transformed the ride into a normal motorcycle type ride, from the spongy hard tail sort of ride.
It also allowed the bike to go around turns as fast as cars do without grinding hard parts.
The stock forks were soft and WAY under damped.
Thicker fork oil made a huge improvement, progressive springs helped a bit also.
Some guys like the road king air shocks (can be got used cheap) but I like the quick easy step adjusters on regular shocks, position 1 solo luxo ride, pos 2 solo sport, step 5 two up.
After the work, the ride is very nice, its just the mid peg location and the massive weight that spoil the bike for a taller rider.
Overall, its not bad though, fun to ride, mostly comfortable, handles ok for the weight, brakes are fine, very low maint needed, great mpg.