Paldo,
I'm very interested in your experience.
In fact, I have PW1210 internal in my PC now, and I'm considering a Plextor for my portable CDRW too, but I found out that they don't offer a PCMCIA model.
Is your Plextor IDE or SCSI?
How do you connect the external drive to PCMCIA card ?
Does Plextor external have PCMCIA connector?