I too was a pan and tilt man for many years and when the first carbon fibre tripod by Gitzo was launched I decided to invest in it after doing a review of a number of tripods including the Gitzo for a UK magazine. At the same time I decided to go for the Gitzo 1376 ball and socket head and within weeks wished I had taken that step years before. The ball and socket is quick, light and very solid and I use 35mm medium format and 5 x 4 on it. I have a friend who has the Arca and it is also excellent.