The stuff we get here in the U.S. is some strange combination of beef and lamb. The product you see on display at the gyro store is not an actual cut of meat, but rather a product most commonly referred to as, "gyro cone" or "gyro loaf." These cones or loaves are formed by pressing ground meat into a cylinder. According to the New York Times, every gyro cone in the U.S. is largely made by one distributor. http://www.nytimes.com/video/dining/1247463404006/the-making-of-a-gyro-cone.html
So next time your drunk friends argue over the merits of various gyro places and the quality of the meat, politely explain that they are stupid idiots whose preferences are based on neon signs.
Now that I've got my rant out of the way, I'd like to say that Salonika Gyro downtown on 6th ave is the best gyro place in Pittsburgh!! In addition to boasting gyro loaf on a hot spit, they offer many homemade specialties such as hummus, grape leaves, stuffed peppers, baklava, loobi, and filo dough dishes made with chicken and fish. (If your favorite gyro store doesn't have any specialties other than gyros made with mass produced meat loaf, you are uncouth and lacking in culture.)
Some of the great things about Salonika are the quality and the low prices. Not to mention the extremely ratty bar frequented by some of Pittsburgh's most likely small time crooks and child support dodgers. To give you an idea of the value you can expect for your dollar, all of the food pictured above cost roughly $13. Grape leaves, tzatziki, hummus, spanakopita, tons of extra bread and a HUGE gyro salad with cucumbers, peppers, onions, tomatoes, olives and feta cheese.
I dare you to find a better value in downtown Pittsburgh for dinner. (If you do, I'll take you out for a gyro on me.) Also, if you are stopping by for a drink, you can expect to pay about $2 per beer. They had $4 mojitos as well, but you don't want to go ordering your Cuban cocktails from a Greek restaurant.