Why the Endura Flap is the Best Pet Door 

I think so. I have had them all and with pet safe I had to buy several replacement doors. 3 yrs with this one and no problems at all. still flexible (sees morning sun) still seals great and my cats (large) can use my medium single, wall mount easily. Best door I've ever had.

Our current house has the extreme on the door and the new house we are building has the endura in the wall. While we only have a couple test runs with the dogs but they seam to have greater ease pushing through the endura (pretty funny but we have a small, medium, and large dog to test with). Our extreme is starting to come away at the sides almost like a heat warping and we can see the outside in the crack. Taking it off and putting a LITTLE heat from a heat gun solves it for a while. All in all baring the stupid price I would chose the endura and next the extreme.