Recommended Multichannel Input Soundcards for Ubuntu Studio?

[dbsoundman]

I was just recently given this wonderful computer with Ubuntu which I have "upgraded" to UbuntuStudio. Now I have Ardour and I'd love to use it but I need a good soundcard for recording. I'd rather not go out and buy one that doesn't work well with Ubuntu, so I was just wondering what you all might suggest for a soundcard or some other method of getting ideally 8 tracks but 4 would be all right of audio input and 2 tracks of audio output on a soundcard. If I could make something like firewire work that would be fine as well, but I would rather not make this a very expensive proposition either. From what I recall, soundcards in general are cheaper than, say, the Lexicon Omega USB interface I use with my Dell Windows XP laptop, so I'm hoping there's something out there for me to use.

Thanks!

-Dan