Hi, I'm new to all of this. I'm looking to record some classical concerts in high quality. I'm about to buy a Sony PCM-D50 as this seems to be about the best quality-wise in my current price range, and I'll be recording at 24 bit 96kHz (and playing them back on my high end audiophile hifi). I'm also wondering if an external easily portable stereo microphone will be better and which one to buy? Is two mono mics really better? The D50 doesn't have XLR in. Is XLR-to-3.5mm possible? Many thanks in advance. Edit: I probably also need a basic introduction to microphone types, I don't know what omni-directional means yet.