This is our favorite place for Asia food in Las Vegas. (Just for the grown-ups though)
We have dined in once but generally only do carry out. The service was pleasant but unexceptional when we ate there. It was too crowded to really have a pleasant meal.
The food is what brings us back. It is amazing! Based on my body's response, I don't think they add MSG.
You order your level of spicy taste. I recommend starting low and adding as you become familiar with their system. I enjoy food at around a 7. My wife likes her's at level 4.
The kids pallet doesn't take to the food here at all, so it is usually a take out lunch purchase. Good place to have a grown-up outing as I have not seen kids there.