My 2 series Gitzo is a bit light for serious work but good as a travel tripod, My 3 series Gitzo is the right size for serious work
My 2 series is a LVL with a Linhof profi 2 ball head and RRS clamp
My 3 series has a RRS leveling base, B55 ball head and clamp
If you want a stable tripod for a DSLR with a long lens or MF go for the 3 series
Marc