Hi Vince,
I replaced both my Emax II Turbo keyboards with the CF card solution: SanDisk UltraII 1GB. Both boot from the internal CF cards.
I used the Acard SCSI-to-IDE adapter, which works well. I tried a number of IDE/CF card adapters, and they all seemed to work OK. The only REAL issue - and it was a BIG headache - was finding the correct CF media. Some media is just too fast, others give error messages like "SCSI offline" or "SCSI error...". I'm having that exact problem at the moment with an ESI4000 machine
There is a list of user-tested IDE/SCSI adapters and CF card media on the Yahoo EMAX group site.
Just to point out that although I used 1GB CF cards, the Emax II only formats a disk up to around 540MB (approximately), but there's no harm using a larger capacity card, as the format process has a better chance of finding the 'good' parts of the card.
(Theoretically, you could use 6 SCSI adapters and have 6 CF cards, giving you over 3GB of sample storage!)
The plus points to using CF cards:
Quiet, cool to run, light, less power consumption, good for reading data from...
The down side to using CF cards:
eventual write failure. You can't write to the card as many times as you can to a traditional hard disk drive, but that shouldn't really be an issue, unless you plan to constantly save samples every day on the card!
Hope this helps.
myk