TG is right on in post #4. Shredded meat is much, much better -- it really absorbs the flavors and has a much better texture. (And don't forget shredded pork!)
And #5 is right, too: if you've never fried corn tortillas into taco shells, you're missing out. It only takes two minutes in hot canola oil and it takes a merely "good" taco and makes it into something "excelente"!
ScottHar