Wow, thanks everyone for your helpful replies.
The funniest thing is...!
I just went straight to work at these pieces after making this post, and have had quite the success!
I've already learned three of the six pieces off that list. I would like to tackle more advanced repetoire, though, before I bother learning any Liszt etudes...they are a bit scary.

Chopin - Etude, op. 10, no. 3: It was ***MUCH*** easier than I had anticipated once I got the general hand motion going. It's very logical.
I'm still working on perfecting the con bravura section, it was the only part that gave me much trouble. This piece is a workout for my arms!

Bach - Prelude & Fugue #2 from WTC I: I learned this quickly. It wasn't so bad, and I haven't even played much Bach since I was a child. It's a very nice piece, I especially enjoy the ending of the Prelude.
Chopin - Prelude #22: I am working on it now. Again, not as hard as I had expected. I learned and memorized the LH in one session...now on to work with the RH chord insanity!

My question is, which Chopin etude to tackle next?
My favorites are as follows:
10: 3, 4, 12
25: 2, 4, 5, 10, 12
I'd especially like the learn the 10/4 and the 25/12 next, but they seem a bit daunting, even impossible. Maybe I should learn the 10/12 and 25/2 first...?
Any opinions?