batsbrew
seems like all the earlier ones only had 16 bit audio,
or 44.1khz, some limiting factor that made me never consider.
i had a tascam 688, back in the day, a great sounding machine.
I dreamed of having a 688, but it was way out of my price range at the time.
I ended up upgrading my Yamaha MT1X 4 track to a Yamaha MT8X 8 track which was great, although only being able to record 4 tracks at once was a major limitation when recording bands.
For most of my own stuff though, I relied on MIDI hardware, striping trk 8 with timecode via a JLCooper PPS100. This gave me 7 tracks for vocals & guitar, which was more than enough.