TP-Link Deco M4 Mesh WiFi (3-pack) covers 4000sq ft, kills dead zones, connects 100 devices, gigabit ports, Alexa compatible.
While
TP-Link Deco E4 Mesh WiFi 3-pack, AC1200, covers 4000sq ft, kills dead zones, 100 devices, app control, Alexa.
Deco E4 = 100 Mbps LAN speed - Good for normal home internet up to 100Mbps.
Deco M4 = 1000 Mbps (Gigabit) LAN speed - For fiber internet above 100Mbps.
On a budget? Go for Deco E4. Need Gigabit speed for heavy work? Go for Deco M4. Both cover your whole house. DM me for recommendation