
eero
Pro 6 Series
Easy, reliable, smart home ready; but paid features.

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I've got a Deco X10 and two M9 Plus covering three floors of a house. Works great for me. They're decently powered devices, each running about 8-10 WiFi clients including two TVs streaming simultaneously.
It would work, if you needed to change media types that the Deco doesn't natively handle, like MOCA to Ethernet. Your primary X10 would be in router mode, and your remaining devices would be AP slaves. Your router would handle DNS resolution and DHCP address distribution. If you can connect the AP's to the router physically, you'll have ethernet backhaul, which is ideal. Otherwise, if your mobile devices handle multi-AP handoff, it will use the strongest signal for the heaviest data loads, and defer other tasks to background channels on the other AP.
If the system you are purchasing has Ethernet ports on the mesh nodes, then you should be fine. My old Google wifi system I just replaced had this and it worked great. That TP-Link system appears to have the same functionality. I would go for mesh over a network extender, as mesh is designed to allow devices to roam between the nodes, a network extender usually is not meant for that.
If you are using AT&T extenders then that is your problem. I bought my own DECO Mesh system and shut off the AT&T wireless function and use my DECO for my wireless connections and my internet works great and all my devices connect with no problem. I couldn't use my printer if the extenders were connected and now I never have a problem. [DECO I bought.](https://www.walmart.com/ip/TP-Link-Wi-Fi-6-Mesh-Router-Replacement-System-3-AX1500-Routers-Coverage-5-600-Sq-ft-Parental-Controls-Connect-120-devices-Deco-W4500/2932481773?wmlspartner=wlpa&selectedSellerId=0&wl13=5842&gclsrc=aw.ds&adid=222222222772932481773_117755028669_12420145346&wl0=&wl1=g&wl2=c&wl3=501107745824&wl4=pla-394283752452&wl5=9016917&wl6=&wl7=&wl8=&wl9=pla&wl10=8175035&wl11=local&wl12=2932481773&veh=sem_LIA&gclsrc=aw.ds&gad_source=4&gad_campaignid=12420145346&gbraid=0AAAAADmfBIoHhfLrBWgn9hxdw2g64jnqW)
Update: thanks everyone, I took some advice on here and upgraded the Deco system I had (about half the price of going ubiquity). Has been up for four days now and is perfectly stable, no devices have dropped off. Haven’t setup the separate iot network, will get around it at some stage. No more frustration for me! I’m looking for recommendations on a new router. Currently have a Deco x10 mesh system running a combination of native HomeKit devices and some off homebridge. About 40 devices total at any one time. I’m regularly getting devices drop off the network, both native and homebrige devices. Have tried all the troubleshooting I’ve been able to find with not joy, so I’m at the point of looking to replace the system. Doesn’t have to be mesh based. We have a medium sized four bedroom, single storey house, with cameras in the front and back yards. Don’t have a specific price point in mind, just want something that’s going to be as reliable as possible. Thanks in advance!
i helped my parents with the same thing last year. mesh through brick can be hit or miss even at 12m because it's still guessing which node to talk to. what actually fixed theirs was a [TP-Link CPE210](https://www.amazon.com/s?k=tp+link+cpe210&language=en_US&tag=bestdeals202f-20&ref=as_li_ss_tl) - it's a dedicated wireless bridge and the connection stayed solid through two walls. the deco x10 is great for whole home but a bridge gives your grandad his own private link back to the router. super easy to set up as a pair and you won't fight signal drops anymore.

eero
Pro 6 Series
Easy, reliable, smart home ready; but paid features.

TP-Link
Deco XE75 Pro
Great coverage, easy; but unreliable Ethernet, poor app.

eero
eero Max 7
Incredibly fast, reliable; but very expensive, limited control.

eero
eero Pro 7
Fast, reliable; but paid features, needs internet to function.

eero
eero 7
Easy, reliable coverage; but no 6GHz, paid features.