About as many opinions here as oil and cams.... lol.
I tried a sundowner first and it was better than stock, but still just ok. I finally decided to spend the money on a good seat and got a Corbin dual tour. Stiff as hell, but it really is comfortable on the long haul. It has a narrower nose and allows you to put your feet on the ground better. It fits the bike really well and is just an all around great seat for me. YMMV of course....
I have a Mustang seat on one of my baggers. There is no comparison between it and the stock seat. We can get you a great deal on one too. Shoot us a PM.
sundowner deep bucket on my road king, and now on my glide. puts u down a little and 500 mile days are no problem. the price is right and if u dont like it u always get your money back on here or ebay
Had a Mustang solo, but I wanted to be further back and down. Bought a Corbin and it's a perfect fit. A little firmer than the Mustang, but still very comfortable, and better looking.