After another three feet and a low price (firsline and polaroid Cullmann and finally), I think finally have found what was looking for: Vanguard, it's solid! The quick coupler does not move a muscle once locked, the tripod is solid and stable, without being too heavy. The control is accurate, and allows screwing the handle excatement in the position that it is desired. Two small flats (without yet having tested the foot outside: - The lack of cover. - The bolt of fastener that is to be tightened with a room or screwdriver. I would have preferred a small integrated ring to dispense tool.
