I can help here....
I have both a pcmcia adapter with a compact flash AND and IDE adapter with a compact flash card. Both work great.
Some say that the IDE & Flash card is not really suitable for a lot of writing to but I have had no problems at all. I do alot of dev work so I write alot to the the card and havent had a problem yet. They are much faster that your standard IDE hard drive, no moving parts, no noise, less power and more reliable. The best thing since sliced bread if you ask me!
The pcmcia transfer kits are rather groovy too! I use mine on my WinXP laptop to transfer files to my A600.
Some stuff thats out now for the Amiga is loads better than when the Amiga was alive and kicking.
Hope that helps.
See ya, folks!