I've visited Athens a handful of times in my search for the best Gyro around the Phoenix area. While Athen's doesn't take top billing in my book, they come in at a close second or third.
They make a mean gyro and you can't hardly beat the $3.50 price tag. For just two extra bucks order it with extra meat and you'll walk out for about $6 with an over filled belly! In case you're wondering - they DON'T serve those crummy gyro pre-packaged pieces. This gets shaved right from the cone.
The pita is good and they could stand to change up the tatziki sauce a bit - it's a little on the runny side. Definitely a sound choice if you're close by and feeling a good quality Gyro.
Quoted in the weekly Yelp newsletter 8-3-2011: http://www.yelp.com/weekly?editorial_id=XY441K1tpmDw830RFs5LBA