I used to be a member of the bag of the club, I have finally meet someone is a member of the tripod head of the month clubI have both plus probably a dozen other makes and models that I've tried over the years. I keep going back to the BH-55 for general use on my Gitzo series 3 & 5. I use the BH 40 on my series 2 but I'm not overly fond of it. I do prefer heads with the lever lock plates. I also like my Acratech long lens/panorama 1160 head. It's almost as good as using a gimbal head and doesn't have the ball head flop over when loosened.