Best possible most comfortable replacement seat out there?

[L3700SU]

What do you recommend? I turn around a lot and put my knee on the seat to operate a stump grinder. Don't think a swivel seat is an option. No room plus I have to keep mo ving forward and backward. Stock seat is actually fine for that but when I put the mower on, the seat bottoms out all the time. I'm not huge, 215# but the stock seat has no suspension.
What would you buy if $ was not issue?

 

[D2Cat]

Want a nice seat with no cost restrictions, look up Grammer Seat.