This WiFi unit replaced the earlier pro model.  With WiFi built-in and compact size it is a much nicer unit.  The physical install was very simple, software/smart device setup was a little clunky but I had a keypad to change over as well.  The main reason for the lock is the auto unlock feature when I get home.  Though the reliability seems to be improved there are still 1 or 2 times in 10 that the unlock could be quicker.  Overall a very nice product.