I found the solo seat firmer than the stock seat - a bit too firm for me - so I sold it and went back to the stock seat. On long rides, I use a sheepskin cover on the stock seat - cheap and effective.
Interesting! Thanks for all the responses. I think I might grab a flat seat and use it exclusively for longer rides and use the OEM seat for shorter trips. Best of both worlds!The flat seat is much more comfortable than the stock seat...and looks great imo. It is slightly taller than the stock one, due to the extra padding, so there is that to consider as well.