I thought this would be a good video for guys looking into shocks. I know the Bilstein 5100 (Monotube) are really popular shocks. The Rancho 9000XL (Twin Tube) were also popular that turned a lot of people away from Rancho. Here the vid shows why. That being said, Rancho has came out with a 7000MT (Monotube) that I am considering trying just to be different. Anyways, here is the video.
http://www.youtube.com/watch?v=u8ssqkIIjLo
http://www.youtube.com/watch?v=u8ssqkIIjLo