3.5 stars for me. We stopped here on a Thursday night around 6:15pm and the place was almost full. It's a very small little space in a small little Strip Mall next door to a Dairy Queen. The service was generally good but missing some enthusiasm and character.
We ordered Chicken Pad Thai and a combination fried rice (for sharing with a toddler). Both dishes were just A-OK. The pad thai was something I've had a hundred times at many other places and didn't have a flair about it that would encourage me to return to try it again. They have a very large menu and I would consider returning to try something else.
The chicken fried rice was, well, it was just chicken fried rice. There are not many options for toddlers in Thai restaurants. It was good enough for her and for us to share.
I did appreciate the unlimited soft drinks - especially since they were serving sodas in cans. Most places charge for each can drink. Siri Thai didn't do that.
All in all - a place that we would probably try again. It's convenient to our neighborhood and worth a second meal.