Come for their curry and their soup!
I suggest getting their Panang curry -- they use fresh bell peppers, add red pepper flakes, and a decent amount of oil. I only wanted to eat half today during lunch, but I ended up devouring the entire dish. It was delicious, however, I remember my first time being much better. I asked for spiciness 4 out of 5. Including tax and tip it was about $10 which was average.
During my first visit, I ate the Panang Curry, had their spicy soup, Thai iced tea, and and their sticky mango rice! MmmMM goood! There were four of us and it came out to $20 a person during dinner.
However, I would still go to Thai Chili because I think I prefer the consistency of their soup and I think they have better deals on their food items.