Howdy, I have been a long-time MD user and my primary interest is recording live music, dictations/audio journals, and environmental field rec's (thunderstorms, cars driving by, crickets etc). I still use an "old-school" Sharp unit (md-mt877, ATRAC v.6 i think) and record in 292 kb "SP" mode. My question is: is it worth it for me to upgrde to Hi-MD based on the ability to record in Linear PCM 1.4 Mkbps? I mean, can you really hear an audible difference in a microphone recording betwen my old unit and the new Hi-MD units? I'm a bit of an audiophile and I love the audio quality of MD live recordings...if the PCM recordings are noticeable better, I might consider upgrading. Otherwise, my trusty unit has treated me fine and I don't want to shell out another $200...