I have a laptop that's very audio-fit (Sonica), which I'm using w/ an Edirol FA-101 and/or a M-Audio Ozone and Cubase SX3. The audio track count is pretty good, I can run a fair amount of Vst instruments as well.

When I take the laptop to review recorded work, and maybe add the occasional audio recording (single tracks), will a small external card like the M-Audio transit or Edirol UA-1ex allow me to play all recorded audio tracks and VSTi through the stereo out bus without problems? and can I expect to record single audio tracks (I know the I/O on these interfaces is modest, I'd be preamping the signal beforehand) without great latency or crackle? in other words, is the limitation of these cards just in the in/out config, or do they perform much more poorly than the bigger interfaces (FA 101, Ozone) track-count and latency-wise?

Thanks
Delgado