got the Avantone mounts yesterday and i love them. they're great, especially for the price.
only problem is that they don't seem to go ALL the way vertical (i've got some a61 swivels on the way). not a huge deal though, since i can just make the adjustment on the mics.
great tip on taking off the extra elastics, too! the mics are plenty snug (even vertical) with just the bottom 2 in there.
thanks again everyone! +t's all around.