When I had the original K2 seat, it beat the pants (!) off the K1 seat on my first 750, by hours. I could ride 1000+ miles/day on the K2 seat, and did many, many times. After marriage, this reduced to [her] ride of 500-600 miles, probably for lack of move-around space.
When I finally wore it out, Honda didn't offer it (now they do!) so I made my own custom seat. It's another 1000-miler, too, and the last time I did it was Midland, TX to Denver in 14 hours (900 miles).
I still remember Cycle magazine's first long-time test ride of the CB750: they described the seat as "Supersaddle in disguise". I always thought that phrase nailed it, compared to any others I have had. I once had a dual-bucket saddle (still do, in the garage attic), which lasted exactly 1 trip with her. Never again, for me!
