Recommended Mfr for steam radiator supply valves?

I need to replace a couple of steam radiator supply valves. I bought one at the local large chain hardware store, but upon reflection, realized that the quality of these devices probably runs a spectrum. This is one purchase that I'm willing to pay the extra money for quality. I don't feel like going around in a couple of years to replace my "new" supply valves. And yes, I'm a firm believer of "They don't make them like they used to" - and I'm not even that old. I figure that the ones I'm replacing are the originals, and are leaking only because of repeated disconnection due to home renovations.

Would anyone care to recommend a manufacturer of such supply valves?

Peace,
Bob.