Thanks to all Austinites et al; here are my impressions from my whirlwind visit:
Austin Bergstrom Airport: fantastic
Super Shuttle to and from the airport: fantastic
Doubletree Club: it wouldn't take too much effort to make this a nice hotel
University of Texas: amazing! we were really impressed. beautiful campus.
Guadalupe aka "The Drag": gritty but interesting
Everyone we met was friendly and kind and dressed in burnt orange for some reason.