I'm still stuffed as I write this, almost 3 hours after eating at z-teca!
Pros - decor, light, space, fast service (although we were there before the noon rush) and taste - v.yummy.
Cons - The burritos are HUGE - 'the size of an NFL football', as my colleague put it! I guess being a relatively small girl, I shouldn't have eaten the entire burrito, but I did and now I am stuffed and craving a siesta! Didn't like having to pay extra for guac.
So my advice - go early to avoid the rush and order appropriately for your size - the bowls looked like they were a more decent size. Don't bother saving half your burrito 'for later' - I don't think it would taste so good several hours later!