Hey Lancer, that's what I use! I like the beads. After a couple of seasons of riding it began to fade so I went to Wal-Mart and bought some Black Lacquer spray paint and it looks real good once again. The beads really do work well for long trips. One helpful hint: go purchase some non slip toolbox drawer liner at Sears (Black) and cut it to the shape of the beaded seat. Place it under the seat and it will keep it from marring the seat with "bead impressions". Also, the beaded seat is a heck of a lot cheaper than the Air Hawk.I use one, can do 500 miles in a day with it. For best ventilation though, beads are the best, like sitting on an air conditioner. I have not used this particular brand, but is a place to start. BeadRider - Beaded Motorcycle Seats I went to Auto Zone bought one for a car and modified it to fit my Ultra. Will definitely keep your bum dry.
BTW, my buddy has the Air HAwk and he is very satisfied with it. Just do like was recommended by others and don't over fill it!