I like nachos. I like good nachos... I don't put lettuces on my nachos after food poisoning. I am not sure, but I seem to recall it was Taco Bell.
I prefer beef fajita nachos. The best I had was at a place in Austin. They would sell a dozen, they were layered and stacked - probably over 1" tall. 1/4 fresh fried tortilla, Refried beans, meat, cheese, guac, sour cream, then a jalapeno slice. The dozen was a good meal. Since they were an appetizer, they got happy hour 1/2 off - so they cost under $4. Eventually the place got lazy and made them self assembly - it just was not the same. I assume they had guns for the guac and the sour cream, I simply could not duplicate it with a spoon. They also got extremely bad about actually selling them during happy hour - even if you ordered them during happy hour. If you could not order, eat, and check out before 6pm, 50/50 what they would bill you. Given it was hard for me to get to them before 5:45 from my office, that was irritating.