I managed to have Taco Bell 4 times during my USA stay. I enjoyed the food each time, but those slushee drinks are absolutely insane sugar levels. Glad I tried, but I'll stick to Aqui's sangria swirls if I want to get destroyed by a slushee.
I went to Chipotle once while there. The food was very good, but you could tell they did not have the ¡Live Mas! philosophy in their hearts.