Coming from a 1 m4 and 3 e4 mesh i was expecting that i would get a massive boost in signal strength for having 4 internal antennas with the x60. I initially placed my x60 where my original setup is. Im also using an app to determine the signal where wifi is fair. But when im about to set up the third deco, signal is still very poor. I had no choice but to reuse the m4 as the 2nd deco to have strong signal with my 2nd x60 because my room is directly above where ill put the final node. Speed definitely improve however i was thinking that the 3 pack x60 would be sufficient with my set up. It would be wise if i replace the m4 with an x60 as well? I want to squeeze all the speed with my internet plan.