The best / cheap solution for great wifi is to purchase additional cheap ones, disable the dhcp server and drag lan from one to the other. (AP mode I guess.)
Lounge, Office, Bedroom for example. Connect your devices to each at least once and then forget about it as it'l switch over.
Of course if you have money, you could do the same but using MESH/Mimo.
> Connect your devices to each at least once and then forget about it as it'l switch over.
Not by default, you'd still need to tweak the Roaming Aggressiveness/Sensitivity. Set it too low and it will only switch when the current WiFi is down, too high and it will switch too often and you'll have too many network interruptions.
On iOS devices for example I think the roam trigger threshold is not user selectable (–70 dBm, and if gaining 8/12dBm depending on transmitting state). So setting this up reliably is closer to luck than science.
There are wifi extenders that should do transparent roaming quite well. Some can be connected using RJ45, some just take the wifi and "repeat it" further away, Some can do both.
In this case, you don't even need to connect to each.
As the article mentions in section 17, WiFi extenders are not recommended unless you don't mind slashing your speed in half. Two repeaters will slash your speed to a quarter, three to an eighth, etc. While they do extend range, they do so effectively by halving the speed because they are repeaters, which repeat every data packet they receive to get it to the other side, which wastes half of the available bandwidth. If it is only using RJ45, and not repeating the WiFi signals, then it may be OK but at that point it's acting more as an AP than a repeater. Section 18 of the article suggests an AP (eg. router in AP mode) is the best way to extend WiFi range.
I've had bad experiences with those repeaters, but never used the RJ45 backed ones. IMHO, that is then the same as an AP though - except for maybe sharing the same network SSID.
Lounge, Office, Bedroom for example. Connect your devices to each at least once and then forget about it as it'l switch over.
Of course if you have money, you could do the same but using MESH/Mimo.