Butts are like opinions... What suits others' may or may not suit YOURS!
I went through around 6 seats before I found a couple that are comfortable to my skinny little backside. I have a Corbin DualTour for solo riding, and I can literally ride all day in it, with no problems. I got really lucky and found it here on the forum for a fraction of the new price. Even has orange flame stitching with a matching TP backrest, and two rider back rests that attach to the seat itself, with nothing on the bike. This old body needs a backrest! But the DualTour is AWFUL for the BSR... it is narrow, hard, and slants forward. My BSRs all HATE it. I'd say it's 9 out of 10 for me, but only 1/10 for the BSR.
The other seat is a Mustang Super Touring Wide Vintage, which is 8/10 for me, and 10/10 for the BSR. It came with an integrated backrest, too... so swapping seats is fast and simple. It's comfy, but not nearly as good-looking as the Corbin.
I've thought about getting a Corbin solo seat, but for whatever reason I just have never bothered.
Good luck!