Which eero should I buy
I have a Verizon DSL account. It supplies a modem/router. Currently we use extenders to get coverage through the house. Whcih Eero mesh can we use, one that does not replace he existing modem/router?
The ideal thing to do is disable the router portion of your combo modem. That's called putting the modem into bridge mode. From there, it's just about the performance and coverage you want to determine what eero(s) you want. Extenders are a very poor technology, so any mesh you use will be superior.