I was so happy when I saw this chain appear in AZ.  I used to frequent it in CA and have never found another sub that comes close.  

I think the secret to their success lies in the freshness and quality of their meats and cheeses - always sliced to order.  If you are looking for a veggie sandwich - you will be limited here.  But, if you like a hearty cheesesteak or italian sub you are in for a treat.  They also take a bit of a different approach in that they really douse their sandwiches in oil & vinegar.   It is a different approach but seriously good!  The "Mike's Way" option (lettuce, onions & tomatoes) is a bit bland, I love to add the mustard, mayo & pepperocini.

Their signature sandwich is the #13.  It has several flavorful italian meats plus freshly sliced cheese.  Don't judge this place until you have tried that sandwich!  It is unlike any other chain's offering & really amazing.  

Their sandwich sizes are a bit different from the regular foot-long, but if you order the largest size you are getting quite a bit for your money.  I've visited the one that just opened in Chandler and was completely pleased.  And, I'm happy to hear they are now opening one in Ahwatukee.

They also seem to have a high focus on customer service - I've always been met by very cheerful, helpful people.  Not a necessity for a sandwich, but certainly a lot better than the opposite.