I've had good luck with the Engenius product. I have a commercial greenhouse project that had about 6+ acres covered with wi-fi into the metal framed greenhouses (faraday cages) using only three devices. Dual Band using the 2.4GHz within the houses and the 5GHz as backhaul to the main building from each house. Been up for about three years without issue. Just did a similar project from a main residential house bridged to the Bocce Ball court/Bar.