I can't directly answer your question. But I have an Ultimate on my Valkyrie and had one on my GL1500. Like them very much. I had a chance to buy a used one for my 2015 but the deal fell through. It's one of the things I'd like to try before I drop big $ on a new one because every person is different. They do offer a refund on new ones if you don't like it.
2015 Goldwing, black
previously: GL1200 Standard, GL1200 Interstate GL1500 Wing, GL1500 Valkyrie Standard, 2000 Valkyrie Interstate and many other Hondas