I have a Fizik Aliante VS on my 650c bike that original had a repop Regal but just didn't fly with my behind.

Then two SSM Rolls on my Paramount and my Cannondale.

A cinelli unicanitor buffalo hide that's padded on my Guerciotti which surprisingly is working pretty good for how slim it is.

Then a Vetta TT Trishock on my Schwinn walmart klunker bike.