Comtrend powerline is reliable. I searched and researched before making a purchase. I had other powerlines too, but not up to 1200Mbps This is more powerful and easy to set up, just plug and play. So far, internet connection is solid. Just plug them in and forget them.
While i wasn't expecting the rated speeds, am getting more than 50Mbps in my garage (home wifi couldn't reach there). The total distance of electric wires from source adapter to garage adapter is at least 100ft. More than adequate for what i need.