First off I always compare thai food to ping kaow, it's just how my mind works and it's a good reference point for comparing vegas thai food
I have been here 3 times now and it has been solid every time. I do like pin kaow better overall but this place is still well worth eating. The lunch special is fantastic and I had it with red curry and it was great.. The tom kha gai soup here is awesome and probably better than kaow.
The reason I like pin kaow a little better is there pad thai is probably the best I have had and pad thai is one of my favorite things in the world so there you go. I would bet that half the dishes are better at one place and the other half is better at the other.