Hi,

I am a big fan of Palm units, i should have most of them, as they worth next to nothing (my wife still using her Vx everyday)

Never have used any with my Macs, just after the Vx series, all of them used USB instead of Serial, including the M 1xx series.

If you have the choice, try to find yourself a Vx, in  my opinion is the best of the line, being light and thin, a nice battery.

If you want something vintage, go for the III series.