From your threads it seems you have a technical inclination. If you have that itch to set it up yourself, a reasonable budget and willing to have some ethernet cabling done I would recommend:
1. UniFi Dream Machine pro SE (https://ui.com/consoles) Note, the SE version is just coming out, essentially same as Unifi Dream Machine pro.
2. Depending on your coverage needs, several UniFi Access Points (https://ui.com/wi-fi/) that would be wired to the Dream Machine.
Properly installed you'll get mesh coverage through your entire casa. With this setup, if inclined, you can have two internet providers (e.g. iLox and Telmex) hooked up, add a NAS (network addressable storage) for video and photo storage and surveillance cameras.