I have tried a Seagate 5GB and a Seagate 8GB Microdrive and both worked iirc in my A600 using my former Mika's angled adapter.
Using Mechware's SCSI Multicard Reader though... Microdrives aren't recognized unless you put them on the PCMCIA slot with it's PCMCIA adapter.
Normal CF's work just fine in the CF slot...
From many tests I saw, despite at times Microdrives can give some kbs more in SysInfo... they certainly feel slower than normal CF cards.
Unless you make A LOT OF WRITES on CF cards, I'd say stick with a normal CF and be done with
