Living in San Francisco, I'm spoiled by plenty of good Thai restaurants from which to choose. SaBai lived up to the standard, with very flavorful pad prik king and their unusually delicious avocado curry.
Don't be fooled by the fact that they have a drive-up window for phone order pickups (maybe that just shows how popular they are, and it's a plus that people are not constantly coming and going through the door for takeaway). The atmosphere is nice inside, the staff extremely friendly and efficient, plus it's smart that they offer diners a full bar. I can't wait to go back on my next visit to Phoenix.