I've heard a little bit of info about matched pairs (of condenser mics), and I am currently under the impression they are only worth while when recording stereo, i.e. on drum overheads... I wonder if the same quality could be achieved with two decent quality unmatched mics, such as a pair of MXL 2003's. So I was hoping someone could shed some light on the issue... are they necessary, or just a waste of time and money??