Let's face it: this is the best Thai place in the valley.
This is where I take my wife for anniversaries. We love it!
The restaurant is open, so even though it gets a bit busy, it isn't stifling. Waitors are responsive too.
Lettuce wraps are a great appetizer, but they aren't going to fill you up.
Best thing in the menu is the Drunken Noodles. The Garlic Chicken is made with a sauce that is drinkable good. The Phad Thai is solid and you can get it as spicy as you can stand it or as mild as you'd like. The spice is fantastic if you can stand it.
Yupha's isn't cheap and is nearly always busy. But for good Thai, there's few places that compare.
I give it 4 stars because it is a bit spendy.