Hi there, I recently upgraded my RT-N66U to the latest official Asus Firmware (18.104.22.168.374_979). Since I'm running a total of 4 Asus routers (1x N66U as the main router and 3x N56U as Access Points) serving circa 25 clients on a single DSL line (50down/10up), I'm considering subscribing to a second DSL line and enabling the DUAL WAN feature on the N66U in Load Balancing mode. Has anyone tried this? Is this reliable (=rock solid)? Thanks!