The best thing about CF is, you can now stick them in your PC CF reader, and set it all up using WinUAE
I actually hadn't thought about that benefit. That makes it much more appealing, because at the moment I tend to mirror my A4000 HD onto a Zip disk and then copy that onto my PC to use with WinUAE. Being about to just setup the actual Amiga and then access the same media easily on the PC using a CF card would be so much easier.

BTW, do you know anything about A4000 IDE? Does that also benefit form a buffered IDE interface? Can a CF card be used with it as easily as the A1200?

I tend to be more clued up regarding Amiga emulation than real Amigas these days as I don't have the room to have them setup all of the time, but I would really like to use my A4000 more often.