Hmmm... That video doesn't really show off the fluid video head though... mostly just the legs.
Wait. Are you saying the cheaper heads (like the ~$100 Manfrotto 128RC) actually bounce up and down during pans? How much bounce are we talking?
I've been making do w/ my $150-200 Giottos 3300 ballhead for the occasional video shoot. Panning is possible, but a tad jerky just because I don't have an arm to do it consistently/reliably. Haven't noticed actual bounce w/ the pans as long as the camera's well-balanced and I turn the head itself, instead of touching the camera+lens -- this w/ the Sigma f/2.8 telezoom on its own tripod collar for instance.
I would get the more expensive video head if I'm getting paid something for the shoots, but not sure my needs justify it at the moment. Actually, the relatively new, non-profit, local youth (classical/jazz) music (para-school?) program that my kids joined are looking to offer me modest freelance gigs to shoot-and-edit for their performances (4 or so per year). They only need DVD-quality results, and the modest(?) compensation would be plenty to help w/ upgrades and the better video head, maybe extra tripod, etc. -- that plus I'd love to help them out anyway... and I'd be shooting because of my kids anyway if they didn't have someone else do it (for the DVDs I'd gladly buy, instead of doing the work myself).
In fact, shooting the kids' performances is a big consideration for me to suddenly consider buying a new DSLR -- futzing w/ the D5100 is getting old... plus would be nice to have 2 bodies to shoot videos (and then edit together), if I could...
Just another amateur learning to paint w/ "the light of the world".
"Whatever is true, whatever is honorable, whatever is right, whatever is pure, whatever is lovely, whatever is of good repute, if there is any excellence and if anything worthy of praise, dwell on these things..." (Apostle Paul)