I've got a Corbin solo seat. I love it. Others disagree. They say it's too hard. Mustangs are more plush. I have a Mustang two up seat. I don't think it stands up as well for extended rides, but IS initially more comfortable.
There's many seats. I like my Mustang seat. At the top of this page there is a Search feature. Click on that and type in "Comfortable seat". Good luck and welcome to the forums.
Mustang has my vote also. Actually to be honest thst is my wife's vote. She dumpted her stock seat after the first few rides then tried a Corbin and found it no better than her stock seat. Ordered her the Mustang , mounted it nd she rode 2500 miles in 3 days and had no problems with long days in the saddle. In fact, since were being totaly honest here, I was the one initiating all the stopping with various excuses because I had told her the touring bikes have great seats.