I think the zooz relay will be the most straightforward. While I'm not a huge zwave fan the ecolink garage door sensors have been really great. Great battery life and very robust and I like the mounting solution. That would be a very straightforward install.
Another option not mentioned (but more pricey) is the Garadget. It's an all in one unit that uses WiFI and a laser sensor built in to detect closed. No garage door tilt sensor required. It talks on both the local network (MQTT) and has a cloud based app. You can actually use either/or or both together. If you don't have MQTT you would have to add a broker...if you already have MQTT broker then this is a good option and SUPER easy to install.
