Any of the Asian connector will work up to 350Mhz without problems and whatever small impedance bumps or loss they have from 400Mhz to 1ghz is less than the problems in resolution that the analyzer has at the high input.
Most cheap connectors bought in the US are also made in China, so be careful. I have gotten junk from W5WSL some of his SMA-F adapters are so far mechanical out of spec they are hardly usable...but hey they were cheap.? If you really want good connectors you have to buy where the industry buys and that is not from a ham source. You have to shell out? the price of the Tiny SA for one adapter. Look at Pasternack, Grainger, or Newark for quality. Example a good SMA-F/ to SMA-M adaptor from Pasternack is $53 a piece and there is a reason for that.? https://www.pasternack.com/sma-male-sma-female-straight-adapter-pe9694-p.aspx
Having tested many different adapters Hams sell on the internet or flea markets and many of those sold on e-bay I found it a better deal to look at swap meets for commercial assemblies that have a bunch of SMA cables and bulkhead adapters that the telecom industry uses. Most of those assemblies go between $10 and $50 and many have a large amount of connectors inside. Many a times the sellers are happy to get rid of them because a) the average ham doesn't build anymore and b) they have no idea what to do with that stuff. Take it apart. If you get an assembly for $10 bucks and get even 2 adapters? or 2 bulkheads out of them you have your money back 10 fold.With all the 3.1Ghz equipment that will be hitting the flea markets and e-bay in the US there will be ample of quality parts available in the near future.
That said, I agree with Zack, the SMB connector is widely overlooked . It is perfectly good for non critical low power use and for test equipment up to 3Ghz and I have seen hams use them at 5.8ghz. I have ample of cables, adapters and attenuators for SMB and SMC that I use for various projects.
John
Roger Need
Jim Shorney
John Cunliffe W7ZQ