I am talking about units that fit in the sound hole,under the saddle or Minnie mics that go into the guitar. Or any combination of the three.Micing or plugging into an amp? If it's the latter try to find something like the Roland AC-60 (used) which has an active feedback buster built-in. As far as UST are concerned they sound uniformly crap without outboard signal processing, so you'd need to factor that in, and that would exceed your budget if you're including a pickup.
The Fishman Loudbox Mini is just outside your budget, new, and has a phase switch to counteract feedback.
Ok, in that case the LR Baggs Element is one of the best respected pickups so maybe give that a try?I am talking about units that fit in the sound hole,under the saddle or Minnie mics that go into the guitar. Or any combination of the three.
The Mag Mic was my choice, too. I think it sounds better than any single-source solution.For under $200, for live, and assuming you specifically want a mic, then a Duncan Mag Mic. It's a combination magnetic/mic pickup, fits in the soundhole. I use the fancier Schertler version of the same arrangement, which is more than $200, but it's a terrific solution. Doesn't take much mic to get a natural sound - just a little mixed in with a magnetic pickup, which is much better behaved in terms of feedback.
I think Fishman makes something similar, too.