I forgot to mention... it seems tripods come in two basic styles. One style has a center column with a locking ring for the leg braces, enabling you to not spread the legs out all the way. This is useful when you're in a tight spot. The other style expects you to spread the legs all the way, at which point they click into a locked position. I have one like that, but I hardly ever use it specifically because I don't want to be restricted to the huge footprint, especially if I've got the legs fully extended for maximum height. (This one also goes over 7 feet high.)
I have two other video heads, both significantly heavier than the Magnus. I use the heavy one - Manfrotto 502AH - on a slider, but I don't notice a lot of difference in performance between the heavier heads and the Magnus. I just used the Magnus the other day for a 3-hour shoot of live music, panning and zooming the entire time. The footage is smooth. A better tripod with counterweights would enable you to let go of the handle and it wouldn't move, but it wouldn't be light, and it wouldn't be cheap. The Manfrotto 502 is heavier by itself than the Magnus with video head.