I have the Spencer mod and love it. Did the SS1000 and BB1500 on it last year without anything additional. I have a sheepskin but stopped using it, because it didn't really help much. So after reading this thread, I decided I needed to try the Airhawk R. I rode on it from Minneapolis to Indianapolis and back, for the MotoGP races. About 650 miles each way. While my butt was marginally better, my shoulders and arms were in terrible shape from the higher seating position. Yes, I did go through all the air adjustments, getting it to the proper inflation, meaning not much air. Anyway, I'm thinking it will be a nice cushion for my girlfriend to sit on in the pillion position.