Deco PX50

Tp link px50 is a decent consumer system.

I got a deco x50 mesh network that let me put a node inside my detached garage. I plugged a switch into it and that allowed my laptop and older game consoles to have ethernet

I think any of those 3 would work for you. I personally have setup my home network on the Deco X50 mesh system with 4 AP in total, and my smart home network in Home Assistant. No issues at all and provides a fair amount of control over your devices and network (priority, IP reservation, preferred bands/AP, etc. ).

Deco x50 mesh system with maybe 2 units ? Allways can add more if you want and need.

I got those cheapo deco x50 with wired backhaul, there are better ones. But the biggest difference I made was everything that doesn't move gets a cable. *everything*

My opinion. Asus aimesh. I have tried TP Link X50 but they spend more time offline than on. Orbi is superb however its too rigid. One router and 2 satellites doesnt like bridge mode or AP Mode. I moved to Asus with RT-BE92U as router and XD4 mini access points. Router mode, AP mode both work well. Versatility of being able to use most of their routers interchangeably as access points. There are downsides. Asus mesh doesnt seem to like IoT devices for smart home. Speakers, bulbs etc. Haven't tried Ubiquiti which a lot of people absolutely praise. If it was within my budget I would try it. Comes down to budget. If you can afford it. Ubiquiti by all accounts. Asus is a great option, Orbi is good if you use it as they want you to. TP Link for me is budget friendly but I think you would end up replacing it and spending again.

I have a 600mbps plan and i use a deco x50. Could deco x20 do the job, yes in paper. But the protocol (wifi 6) is not the only consideration. For deco x50 it has 2x2 mu-mimo which better handles wireless devices. I have wifi 5 device in theory should handle 600mbps but it reality it only handles 300mbps. In conclusion, you may need to know what are your devices and how many. Also what is the structure of the home (concrete or wood walls) if wireless backhaul would be enough or you need wired. If you dont want to think much. I suggest get be25 for future proofing. Deco x50 if your not gonna upgrade anytime soon.