I'm a Chicago native who moved to AZ after 30+ years. Needless to say I've had my share of Chicago pizza. For a point of reference regarding deep dish pizza, we preferred Lou Malnati's and the original Gino's East (on Superior). There are many others, including mom and pop shops, that are excellent too.
On to my Buddyz review.
Food: We had a deep dish sausage and fried calamari appetizer. The calamari was very tasty and a good portion too. It had a light batter with a hint of black pepper. The pizza was delicious and cooked perfectly. It had a generous amount of sausage which tasted similar to Lou's (a bit more fennel). The sauce was slightly sweet with a nice balance of garlic. The butter crust had a great flavor and was done perfectly. It I were to compare it to others, I say it was a cross between Giordano's (cheese flavor and texture) and Lou's (crust and sauce) However, IMHO Buddyz deep dish solidly stands on it's own. Buddyz earned it's way onto our pizza rotation.
Service: They have some kinks to work out. There was a good amount of staff and the manager is actively involved. No complaints, just can tell it was newly opened. I have no doubt they will settle in quickly.
Restaurant: The site is very plain, with a small bar up front. It simply doesn't have much ambiance but the friendly staff helps to overcome it. The layout is a bit odd and I give them credit for avoiding the tempatation of jamming in too many tables.
Summary: Delicious pizza. Very nice people. Buddyz will be our local deep dish choice. Probably will do carry-out more often than sit down.
Side note, I liked the poster from Thillens, it brought back some fond memories.