I went to a Pepe's when I was in Chicago to see Fugazi once. I'm no food expert but I'd take Taco Johns or Taco Bell, fuck even Taco Time over Pepe's. 5 stars for the ad guy who probably said "make 'does' sound as much like 'is' as you possibly can." That, and 5 for evil shitty food.
I haven't been there in nearly 20 years. There's a Taco Time right by my house, conveniently located across the street from a Taco Bell. For me it's a step down from Taco Del Mar and Cha Cha Cha, and priced similarly, but if I was in a hurry I'd totally choose Taco Time. Being vegan and loving Mexican cuisine is always a bit of a conundrum for me. I didn't realize they had expanded so much! They're all over Canada now.