From my experience with my recent installation of a CFIDE68k, I can heartily suggest the SanDisk Ultra II 2.0Gb as an excellent choice. Note: You will need to format the CF as a bootable disk, and put something like FDISK on it so you can delete the partition to get it ready for the Amiga.
The info I found and followed was from
http://eab.abime.net/archive/index.php/t-26860.html.
Good luck!
