Hmm, I think I would agree with you on the macro aspect. Are you saying that the Redsnapper is more stable?
All I know is that I tried the Acratech because I wanted one for its very light weight and the very appealing design and engineering, but TBH I think the open design is left wanting in the clamping precision department. Though I'm sure it's as solid as you like once it's locked - that's not the point. When being critical, it just couldn't easily lock it in the position I wanted it in.
I bought a RedSnapper 284 tripod and RSH-12 head on behalf of a friend, partly to see what all the fuss was about, since they get recommended all the time. I found the tripod pretty average and a bit wobbly in both the leg and platform joints, but on the other hand it's at least as good as anything else for £50.
The head on the other hand, also £50, was a delight. Really smooth, progressive and precise clamping action, with no movement between positioning and lock down. Which is actually quite rare in anything but top end heads costing 3-4x that price. I felt that ultimate clamping strength was perhaps not as high as some so I wouldn't recommend it for really heavy stuff, and it's also not the lightest (getting on for twice the weight of the Acratech) but for fifty quid - bargain.
If I was buying again, I think I'd get this PhotoClam with panning clamp (which I have half an idea has a few bits in common with the Markins Q3)
http://www.dentonimages.com/page.php?id=Photo_Clam_Pro_Gold_II_Easy_PQR_Review And then for studio use, this gorgeous geared Arca-Swiss D4
http://photorumors.com/2011/02/01/t...ce-world’s-smallest-and-lightest-tripod-head/ Unfortunately it costs four figures, and that's if you can actually find one.