Couple things are pushing the upgrade:
1. wifi strength is quite week from one of the units (hoping the Beamforming will aid for video xfer speed/quality)
2. need system to switch between AP as there's a lot of movement in the home during work video conf - the Fast Roaming Capability should allow for that. (works great with eero in my other home).
Q: looks like I have to purchase them from a dealer (or ebay). true? I full run/manage my full system.