I'm sorry, but I don't know how you could like Olympic Pita.
I went to the one on 12th and got a falafel pita. The falafel balls were pre-made and sitting under a heat lamp. The guy threw a couple into a cold pita, and topped it off with cold cabbage, Israeli salad, hummus, tahini, and pickles. The hummus was yummy and so were the pickles, but the sandwich was cold and a real letdown. The way some people rave about this place I was hoping it would be more along the lines of Taim. What am I missing?
I haven't been to the one on 12th Street, only the 38th Street location. Perhaps you went at an off time. A couple of times I've had lukewarm falafel balls. Pita is not the way to go. You must do the laffa -- a totally different experience. However, the falafel balls are no way as delicious as Taim. Taim rocks.
I think I just gave up on falafel after too many cold/bad sandwiches. I think bahn mi are not only delicious, they are almost always made to order. I know it sounds unrelated, but as I read your post that is what popped into my head. I know, I am a freak when it comes to such things.