Primo EM 272 are nice and cheap electret capsules. I use them to record lectures. The quality is similar to the capsules that are in hand held recorders. I think Sony M10 has these apsules. The advantage of EM272 is that you can space it how you like. In Sony M10, the capsules are fixed in very short distance, that is not good for stereo recordings.
The max sound pressure level 122 db is enough for a concert taping. Maybe there is needed 9V power (battery box) when recording loud sources. These are cheap capsules, do not expect miracles when recording music. You can find some recordings on LMA. Try to search EM172, these are predecessors of EM272. Because they are ordinary, I think pairing with a specific hand held recorder has no effect on the sound. I would only pay attention to the noise of the preamp. S/N ratio is the best when you setup a high gain in recorder, but be careful of clipping.