I bought the 3rd generation hub and keypad and I must say that so far they have superior signal strength over the gen 2 stuff. I have a Utilitech Siren (Zwave) which had to be located in my home office about 5' from the gen 2 hub because it would not work as soon as I moved it outside the home office. With the gen 3 hub I'm able to place it out in the living area and it works fine. I was also having intermittent problems with the gen 1 keypad not always turning the alarm system off I'm assuming because the signal had to pass through 3 walls. When I moved the keypad into the home office there was never a problem but it was not convenient to place it there. With the gen 3 hub and keypad I can place the keypad back where I wanted it and so far no problems.