I track according to the source. EVERY instrument in my beats get tracked out. How I track it depends on the source material. Strings, piano's, certain lead patches, pads and sounds that are usually "stereo" in source/nature get dumped that way. As I stated before (IN THE THREAD THAT WAS LOST DUE TO SERVER CHANGES) I *will* dump a sound in stereo if I plan on MULTING the track/channel/instrument. Another topic another thread....
recording a sound that isn't "true stereo" on two channels will result in the parts summing 3db louder when panned hard left and right.