I own the PCM-M1, it's a beauty! The D100 and M1 are identical, minus the fact that scms can be ignored on the M1 and the M1 is black and the D100 is silver (i think the D100 includes a remote and the M1 doesn't).
Check
www.taperssection.com
The yard sale forum on taperssection has a constant flow of portable decks for sale especially since Phish is breaking up, quite a few people are selling their entire rigs. If you plan on stealth recording, i can understand why you want a dat, however, if you are open taping, i think you are better off with a NJB3, creative sells refurbs on ebay for $180 usually. Remember, when it comes time to transfer your dat, that's done in real-time. With a nomad, you plug it in via firewire or usb and bam, a few minutes later your recording is on your pc for editing.
Analog conversions should be out of the question. To preserve your master to your pc and later a cd, it's unacceptable to stick to analog transfers.
[rant]Sony really fouled up Hi-MD, which should've taken over the DAT market for tapers and the like, instead Sony wants to have total control (as usual). With the advent of ipod and other HD-based mp3 players/recorders (iriver, nomad, etc etc), Hi-MD simply won't make much of any impact, Sony is far too late and taking the easy way out, instead of taking risks and supporting mp3's and digital uploads, Hi-MD is completely worthless. What does it offer over the ipod? Nothing. Same battery life, less storage space for tunes, wimpy headphone out. The NJB3 has everything a taper can possibly need: great battery life, decent A/D, line in, optical in, two line outs, usb, firewire. Nice going Sony! [/rant]
I bought my M1 for under $400 on ebay (what a steal!) and it came to me in wonderful shape. I also sprung about $150 for my tascam DA-20 dat deck which features a coax in/out and then my echo miaMIDI card for $200 and then my mics ($280) and later a preamp ($300). Oh, don't forget all the cables and adapters as well and...AND...blank dat tapes (DDS-1 tapes are much cheaper than your standard dat audio tapes). Taping is quite an expensive hobby (forget headphones). Hope that helps.