I'm a student at SAE Institute, and a while back we were treated to a microphone demonstration by Tully McCully, a South African local who makes TUL microphones.
To cut to the chase, his f47 FET (large diaphragm condenser, based on the Neumann U47 FET) was compared to a Neumann U87/U89 and an AKG C414 (amongst others) and out of about 20 people in the room, the overriding opinion was that it was better than any other mic there. Yes, the Neumann and AKG were close to it, but everyone felt that the vintage overtones that the TUL had just weren't replicated in the others. They all went through a Neve Genesys console, so they were very high quality preamps. Most people were skeptical at first, but as soon as they heard the comparison that skepticism was put to bed. And, these mics are MUCH cheaper than, for instance, the U87.
He also makes the T12 small diaphragm condenser (based on the almost unobtainable AKG C12 - this is great on toms, overheads, acoustic guitar, even vocals too), and the G12, simply the most amazing guitar amp mic I have ever been exposed to. It is currently being used by Steve Vai and Joe Bonamassa (Joe's latest record used only TUL G12's on the guitar amps). Other users include Kevin Shirley, and Crosby, Stills and Nash.
As of today, I am the extremely proud owner of the f47. And wow, I have spent the whole day with it and am amazed. It's also great on bass amps, kick drum, acoustic guitars. I think he only has 8 f47's left to sell, as he only had a specific quantity of a part he ordered from Russia to use in them.
From what I've been hearing and reading, these mics are causing quite a stir. Tully even has the drummer from Saturday Night Live flying to South Africa to meet Tully himself, as he has been using them (f47 and T12) on his kit and can't believe how good they are. Check them out at
https://www.facebook.com/TulMicrophones