We come here now regularly enough that the waiters recognize us.  The food is incredible and I love the vegetarian options and very inexpensive.  They also have a great wine menu --- which is an unexpected treat since many Asian restaurants have the same old Kendall Jackson/Beringer wines.  I have been to all of the high end Thai restaurants in this city (including Nan and Tamarind) and L'Thai is entirely on par with both but at half the price.  I am always surprised that it isn't more busy.  An undiscovered gem!
Pros:  Everything!  The food is fantastic
                        
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