Well, my answer to Asian One has finally arrived!
Ventured out to Suwanasak after reading a couple reviews. I got the Naam Ya with chicken--a dish made with a bit of coconut milk, lemongrass, garlic, lime leaves and a couple other things--in a bowl of vermicelli noodles.
The dish? Awesome. Really. Absolutely delicious! Spice level was spot on, flavors were excellent, price was cheap ($5.59!). Definitely authentic. This dumpy little restaurant in an off-the-path strip mall has finally answered my prayers!
No, it's not the best Thai I've ever had, but as far as the best in Madison? Unequivocally--yes. I will be back...again and again and again.