Klavon's has simply the best pizza anywhere.  The wait times on the weekends are a diversion if you are looking for the best pizza.  Any pizza  combination will be among the best you have ever experienced, but on occasion you must try the stuffed pizza.  Wow!  The rest of the menu features first class burgers and other sandwiches.  If you enjoy a salad with your pizza or burger, try the chipolte ranch dressing.  The atmosphere is upscale sports bar, with a TV in every booth and large screens over the bar.  I agree with other comments that the wait can be annoying, but understand the goal.
Review Source:Klavon's is a good Pizzeria hands down with a wide variety of dishes, pizza pies and wings. Portions are generous. You don't go to a Pizzeria for the salads, you go for their delicious chicago style pizza! (Very generous in portions)
The staff is friendly however, I have found them to be a little shy when greeting customers for pick up orders. All of the staff I have met are neat, good looking and well mannered. The seating is very good since a lot of other pizzerias hardly have enough seats to accommodate large families. Klavon's is very busy on weekends and game days and on some random evenings. (There will be a wait for seating on the weekends, so be patient) The parking lot is always full, during regular dinner hours.
I hope my review helps you to all who read it and leads to a great experience.