About Usb/serial Midi Adapters, MidiTimePiece AV with Mac 1G dual/OS X Options

[zeze]

hi everybody!

I'm going to buy a new Mac 1G dual and I'd like to continue using my MidiTimePiece AV that actually use with ProTools 5.1.3/OMS (d24 Digidesign card), OS 9.1;

can you help me finding the best choice (lowest latency) of a usb/serial midi adapter?
possibly I wont use a PCI card but I really dont know how those software adapter works;

also I'm going to upgrade to OS X (hope d24 works with PT 6), so the choice should be compatible with the new operating system.

thanks so much,
peace
zeze