I have only used the Lexicon and Terratec cards. My thinking is that, as long as you keep away from the bottom end (Soundblaster, for example) and get something designed for multiple duplex (simultaneous record + play) you'll do OK.
There has been a lot of debate about this card or that one, but the fact is, if you are on a budget, there's not infinite choice. What I did, was figure out what kinds of I/O I wanted (in my case, ADAT lightpipe), then I looked in Electronic Musician's Computer Music Product Guide
http://www.emusician.com/ (scroll to the bottom left)
for a sound card that did that. I ended up with a Terratec EWS88D, which also has an analog stereo out so I can play back CDs and also 2 pairs of MIDI I/O, which I now need for
my Mackie Control Universal, all for slightly over $100US. I'm not saying this is the card for you, just that the resources are out there for narrowing down the choices.
Another possibility is the variety of I/O devices that use their own PCI card or USB/Firewire devices to connect to the computer. As I said, as long as CEP recognizes the device you are using, the limit is really in the device. I recorded through the USB 1.1 cable on a Tascam US428, just to see if I could do it, and it worked fine...and newer USB devices use 2.0 which is capable of multiple tracks.