Superchips flashpaq Part#2815

Has anyone used Superchips flashpaq #2815 programmer on their 2006 avalanche yet?  Planning to purchase programmer for my 06 Z71 could not find the old superchips model #2716 anywhere.  Everywhere that used to carry it are either sold out or no longer inventory the old models.

Please respond.

Otherwise, where could I purchase a 2716 model?