Thanks, I'm gonna put those ThinkTop cages on my Amazon list.
I've been trying to find cages for my '93 Trek 5900, which has a quirky mount -- instead of the usual threaded holes/sockets, it has threaded bolts/studs projecting from the downtube and seat tube. Makes it tricky to find cages that fit properly, and retain bottles properly, and look good.
I had hoped the Tacx cages would work because they look good, have the right tension and are reasonably priced, but no luck with the Trek 5900, so I put the Tacx cages on my Ironman. I found a decent looking matte black aluminum cage that does fit the Trek with the right washers and spacers. It'll do for now.