The whole "which seat is best" argument is almost as pointless as any oil thread.
But, I'll share my experience with you.
Bought the FJR in April 2008. GF at the time (now the wife) enjoys riding with me and taking pictures. We took a ride on Labor Day weekend in 2008, our first extended ride. The ride home was 550 miles. By the time we got home, we were both in agony on the stock seats.
Started looking around and bought a Mayer (can't remember if it was a Bill or Rick; it was on TWN's bike). While much better than stock, it still just was not for us. It was pretty slippery, so pretty much any time I hit the brakes, the wife would slide in to me.
Just before SFO '09, a used Russell came up for sale here. On a whim, I bought it and popped it on the night before I left for SFO. So the first ride on it was from home to SFO in Eureka Springs, AR. That day was 725 miles of riding. My ass was fine.
Some people don't care for the Russells because they're ugly. They are ugly. I don't care because it's comfortable. There's a reason why the LD guys have Russells. They're also expensive. Keep your eyes on the Group Buy area - there is usually a fall / winter group buy where you can get one for 10% - 20% off.
Or, just buy what you want. Go to FJR gatherings. Get enough bikes together and you'll see all the seat makers being represented. Make friends with the owners (AKA give 'em a beer or two) and have a sit on their bikes. Decide for yourself.
EDIT to add: BTW - if you like to hang off the seat while cornering, Russell's aren't the best, due to the fact that they have a pocket for your butt. The wing thingamabobs can be problematic when you try to shift yer ass off the seat.