I have three seats available to swap on the bike (2006) using the quick disconnect pins. Two typical stay on the shelf, that would be the stock seat and the Suzuki Gel seat. The preferred seat is my Tobin with the zip in back pad. I originally tried the gel seat prior to getting a Tobin. I figured it needed time to break in but after over 4k+ miles it just didn't get comfortable. And it did seem to be hotter than the stock or tobin. I have used all the seats on varying length of rides, from just getting to the local meet and greet, to an all day 500+ mile ride.
So, my order of preference is as follows;
1) Tobin
2) Stock
3) Suzuki Gel
With that said, I'm 6' 2" @ 225 lbs. (I'm not fat, just easily seen)
PS - a note about the Tobin, I wish I had a second pad that's half as thick for when I wear certain leathers. I called Tobin back in the day and they wanted $60 for it so I passed. I figure since I was an existing customer it might have been for reasonable. Oh well, when I get around to it, I'll have one made locally for a lot less.