I wanted an access point, and while this does that, it was a bit frustrating to get it there. You have to set it up, including the nodes, in Wi-Fi mode first, and it creates it's own network. Then, you can switch it to access point mode...but it keeps the new network you created. If you want your original existing network, you can then rename the SSID and password to match the existing, and now you've got extended access all over, all on the original network you had set up. Outside of that, it's been working great.
I'm using 4 nodes to span probably 200 linear feet, jumping from my house to my workshop, and while there is a speed dropoff (about half) going from the house indoors to the workshop indoors, overall, the speed is from node to node is excellent. Not sure on longevity, as I've had it set up for about 2 weeks, but so far, I'm real happy with it.