Ended up getting one of these, and I like it so far:
http://tascam.com/product/us-1800/

Not as feature-rich as the Presonus unit, it doesn't have all the software effect bells and whistles, and it doesn't have a software mixer panel with a bunch of routing options. On the other hand, all those things generally just got in my way before, and I kind of like its simplicity. We'll see how it does long-term.
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Tony Fabris