We say:

If you're looking for an extremely good value pair of mics to capture musical groups or individual instruments, the Sontronics STC-1S is a brilliant choice.

Sontronics say: 

Laboratory-tested as a stereo pair, the STC-1S' are ideal for acoustic guitar, ukulele, piano, string ensemble, drumkit, choir, houses of worship, jazz club, symphony orchestra or even field recordings out in the open air. The STC-1S stereo pair will capture your source with perfect clarity. As with all microphones in the Sontronics range, it comes with our unique lifetime warranty.