Seanmorse, you can't get a pair of Oktavas from GC, you can only get 2 mics. When they say matched pair, there are 2 primary qualities that must match. The first is output, and I'd say a variance of < 1db would be useable. The bitch is that they must do that across the audio spectrum. Every mic has tonal peaks and lows, and a matched pair doesn't zig where the other one zags. I'm sure the tech boys will give you all the links you can stand. If you intend to use this "pair" for X-Y micing or overheads, I believe the extra money is worth it. As I said, if you want *1* mic, audition GC. These days, quality control seems to be improving, and your chances of hitting a useable mic on the first try is pretty good. For pairs of mics, Taylor is The Man!-Richie