Nicholas Rowe
Google
There aren't many options for fast casual Tex Mex in Atlanta. You have Torchy's on the west side, or Rusty's. I much prefer Rusty's. The flour tortillas are nice and fresh, the meats are generally good quality (some better than others), and in my experience Rusty's doesn't use the gross pre-shredded cellulose-filled cheese that Torchy's puts on everything.
The downside is the subpar and inconsistent customer experience:
1) Online ordering doesn't work 50% of the time.
2) When it does work, picking it up requires talking to the cashier. (Often interrupting conversation with customers placing in-house orders, which just feels awkward and rude.)
3) The online orders shelf now seems to be used as a storage space for cleaning products.
4) Once when I walked to Rusty's they were closed since their POS just didn't work at all.
5) The salsas are in bottles with very thin nozzles, requiring you to take the cap off to really pour any salsa.
The Sunrise Slammer is a really solid breakfast burrito. I really enjoyed it, and it's hard to think of a more delicious breakfast burrito in the area. The only contender is Poco Loco, which for me is still #1.
As far as tacos, I really enjoyed the brisket taco. I have not had the BBQ brisket taco as I find BBQ sauce generally overpowering when used outside of proper BBQ. I would skip the seafood tacos. Nothing special.
Superica reigns supreme in Atlanta for Tex Mex, but Rusty's js a fantastic option for a quick and much cheaper lunch.