On: Neighbour manages to pollute the 2.4 ghz spectrum ...

[fatnoah]

I do this in my own house w/powerline networking as the backhaul. Cable Modem is located at the main TV and connected to an Ethernet switch with local devices and powerline node. Three more power line nodes power two additional APs and an ethernet switch for wired connections in my home office.

It's not the most elegant solution, but it works and allows me to have Inet/WiFi access in and around my house.

[labawi → fatnoah]

Trade single band noise for broadband noise? Wouldn't recommend powerline.

Not that powerline doesn't work (sometimes), but it radiates and raises the noise floor for all sorts of frequencies, pretty much by design.

[galangalalgol → fatnoah]

I have powerline modules already and they work so I'll probably go this route. What APs did you get?

[fatnoah → galangalalgol]

I used the Netgear EX6150. I have no idea if they're "good" or not, but they seem to work fine so far.