hi

best PCMCIA card to use in an A1200.. there is'n any..
there are some good and better only

If you want to buy one, you should make sure that the NIC
is:
-16 bit
-uses NE2000 standart
There are some drivers for 3Com megahertz cards, but I've never tried it..
It's very hard to buy a good card for Ami, I myself bought about 8(!) cards before I fohund the one that works (it's Dlink DFE670TXD, works 10/100 (well that's what the LED shows)but sometimes hangs my Ami (very rarely), and it needs some work with the os3.9 romupdate config file..
well.. good luck with your search, hope you'll find the one that works..