Value of Seat Modification

[The Gecko_imp]

I am sure others now better about types, prices, and personal experience.
There is a report - I am trying to find it - which explains where the so-called comfy seats (aftermarket) fail. It goes more or less like this:
a good seat remains unchanged in softness and firm when it warms up (considerably), meaning when you do longer trips, or go in warm weather, this is what the comfy seats usually cannot do (and what you cannot test before ordering). If a seat gets softer during the ride you will slowly slide forward (in most cases, true for the CB), and this renders the initial extra comfort useless.
Best re-sale value : original seat
best price as you now already know : original
good position for 6' : original (I am 6'3)

Good luck ;0