I have upgraded my dkb 1240 to 50 mhz and 68882-50. Its stable, runs a little hot without cooling but its a good card.
The scsi upgrade would be nice but i have not seen one in the last two years so i got myself another card with scsi.
Have a blizzard iv too, but no scsi, which is probably the best of all mentioned.
Never had an aca, but as it is the newest and probably longest lasting would go for that, if it runs stable.
Keep the ACA as a spare and use the Cobra until it dies. You can update the 16GB to 64GB. Impossible to find a Ferret(SCSI) but with a PCMCIA CF Card reader and an internal 4GB CF Card you don't really need SCSI.
