Amplifier works just great for MP3's (as long as you have a hardware solution like a MAS Player, or MP3@64).
You can forget about MP3s with software decoding on the 030.
FastATA is a really good but only if your lucky since it's working fine per case.
Seriously it works fine with certain hard disks and configurations. I know cause I had it and despite I loved it, it was working only with a certain HD over PIO3 and with all the others till PIO3 @ 2.5mb/s.
Idefix Express is a really rock stable product that works out of the box and for the Primary channel it doesn't even need any driver or software to run with full speed. It's an awesome product by all means.