Food: Generally good to excellent. Recommend the House Specialties in particular. Some of the more ordinary dishes like Garlic Shrimp are good but not much better than you'd get at other Asian restaurants. Lately (2007-2008) in my experience there can be a tendency to skimp a bit on the proteins in the dish -- there were only 6 shrimp in the Garlic Shrimp dish ($12) and only a few pieces of tofu included with the Curry Squash.
Service: Tends to be slow. I've dined in at the Willy Street location and carried out from both Atwood and Willy Street locations, total about 10 experiences, usually in early evening on both weekends and weekdays. Servers are friendly but tend to mosey even during busy times. Expect to spend 1.5-2 hours for a meal with 2-3 people. Add 10-15 minutes to their estimated times when carrying out.
Value: Decent. Prices have jumped quite a bit in the past 6 months or so, though this is probably related to overall rise in food prices. Entrees $12-16.
Overall: Agree that it's one of the better Asian options in the Madison area. If you have time to wait, the food is usually worth it.