In the last few years I have had a variety of saddles including a gel cover.
Many of them promised a comfortable ride, but after a long ride (metric Century, Century, and Brevets),
I found that my butt hurt. Even the next day I was still sore.
So this winter I bought a Brooks saddle.
I had heard that they were supposed to be good; but I thought that since all the other saddles I tried were more or less of equal quality, the Brooks could be only marginally better.
I rode with it on a number of short rides and did not find any discomfort with it.
However, I did have to reposition it a few times to get it where I thought it needed to be.
Then came the 200 Brevet of May 3/08.
Toward the end of the ride everything hurt -- my palms, my legs, my gut, my butt.
After riding just over 11 hours, everything should hurt.
A few hours after arriving at home, my butt didn't hurt nearly as bad as on other long distance rides.
Today, I can report that my butt is still OK.
And I attribute the lack of pain to the Brooks saddle.
If you are having a sore butt from a long ride, I'd suggest trying a Brooks saddle.
I wish I had switched a long time ago.
By the way, I don't work for Brooks or collect any commission for them -- maybe I should