There aren't any other manufacturers that I've ever heard of that have a hole on the bottom. I think there are also concerns for stability / liability when the stands start to get too tall.

If you don't want Axioms, I think the only other option will be to build your own.

FWIW, those that HAVE purchased the Axiom stands seem to report that although they're pricey, they're well-made... if that helps.

::::::: No disrespect to Axiom, but my favorite woofer is my yellow lab :::::::