I have a set of the Armstrongs and I also have a set of Matcos, which are rebranded Armstrongs - they are exactly the same. If you are concerned with warranty, Matco is still marketing a made-in-Taiwan set that I understand they would warranty a made-in-USA set for. The Taiwan versions are 90-tooth and look nearly identical and are probably really nice as well. HOWEVER, I will point out that if used "correctly" I don't think you would ever have a warranty issue. Use the fixed box-end to break the fastener loose, then flip the wrench and ratchet it off. And vise-versa for tightening. Minimal stress on the ratchet itself.
Pointing this out because they are for sure my favorite wrenches and they do come up on eBay from time to time, sometimes even NOS sets, and they will fall in the same/similar price range.
BTW, Apex will warranty the Armstrongs, but they will send out one of the XL Gearbox wrenches as a replacement. Not nearly the same (I bought a broken one to try this out and this was my result).