In my not-inconsiderable experience, vibration and movement is just as likely from other areas. All depends what legs you decide upon but my latest, a chunky Induro, when the centre column (I use the short) is not extended and locked-down, there's no perceptible movement at all. However, I struggled for a long time with my previous Red Snapper tripod, thinking it was junk, until I looked much closer and discovered flex in the post of my ball-head. I checked a few different ball-heads and saw the same thing. All that money spent on tripods and it's the stupid ball-head post (connecting ball to plate) that was almost always introducing shake and wobble!
When I bought the Induro, I also bought their second-largest head, after looking at many others. The Induro had a far-thicker and much shorter post on the ball than others I'd looked at so I went for it and haven't looked back since.
If I find movement now, it's most likely to be looseness between the plate/camera or the legs themselves - you will never get an extendible carbon-fibre leg that doesn't flex.