Thanks, everyone for the suggestions. I only need 2 inputs and 2 outputs. I wish MOTU made a smaller, less expensive card. But the Echo looks like a good candidate, I'll try it.
I like Echo. I've been using an Echo Layla (early 20-bit version) on my home computer for almost 9 years now! It still works very well. If I could plug its dedicated PCI card into a laptop somehow, I would!