Seat
Jawana,
I went with the Mustang two peace seat. Didn't get the back rest, sometimes wish I had. Big improvement for passenger. moderate improvement for me. I do think it is as good as most.
I believe there are some other things to think of beyond just the seat. A back rest will help some.
Posture is a big factor. Cruiser bikes put you leaning forward slightly. Risers or handle bars change this.
Sometimes you just need to toughen up a little by riding. This time of the year you hear more about seats than later in the year.
When it comes to riding all day all of these things come into play. Guess we need to choose a touring bike or a cool looking cruiser. They don't seem to be the same.
Dave