Quattro USB Audio Interface woes

Hi,

I'm using SONAR 2.2 with an M-Audio Quattro USB Audio Interface. I had it configured so I could actually do HD recording at 24 bits with only occasional drop outs. Getting to that point was very difficult and frustrating. Then my hard drive died!

I *think* I have the latest Quattro drivers:

Firmware Version: 1.05
Driver Version: 5.10.00.3515
Panel Version: 2.0.0.2


I just want to lay down some decent demo tracks. Can anyone help me or send screen scrapes of a configuration that works for 24bit depth?

Also, I'd like to find a firewire audio interface with a little more raw power that works well with SONAR *and* (like Quattro) has the convenience of an on-board MIDI interface. Preferably something as responsive as my Edirol UM-1 which doesn't include a noticable pause after you click the Play or Record button.

Thanks

Jeff