Update: I wrote this last March 2012 (not sure why it's only posting now)
I had heard great things about Aseoma, specifically regarding their tacos.
I absolutely love the tacos, especially the Fire meat and the chicken.Great flavors and definitely worth the price. But I second Sarah R.'s suggestion for more cilantro and lime.
I've also tried the pad thai which was delicious, tangy, and filling.
I will definitely be coming back (already 2 days in a row), even if just to stop in to grab some tacos on the way home from work.
I wish they would forefront the tacos more in the menu, since it seems to be one of their strongest dishes. I also wish Sq. Hill had more casual food options that felt less like a sit down restaurant.