Yes!
There's a few missing parts to this conversation, if we're gonna get pedantic. We've talked about picking the right RF band (wifi channel), however what we must also consider is your neighborhood is dynamic. One neighbor will buy a printer with local wifi hotspot for direct printing, another will swap routers when their cheap ISP one dies, a third has a kid who keeps powering on the mobile hotspot on their personal cell to circumvent their parents time controls on the house router so they can play fortinite past midnight...
So, a good prosumer device will not only pick a good channel at the outset, it will continually re-scan the spectrum to identify if the situation has changed and, if so, to re-select a new band accordingly. A really good prosumer device will actually build you an RF band plot of interfereing APs and their signal strength. Even better, a collaborating set of APs (eg with a central AP controller) will work among themselves to optimize their own bands and coverage. Basically all enterprise gear will do the same, however a "real" enterprise deployment will have an RF heatmap of their site generated and the AP radios will either by configured in real time during the heatmapping process, or a single discovery phase will be initiated and then the static configuration set in NVRAM.
Another good piece of prosumer and enterprise gear will perform band-steering. You can obviously create individual SSID's unique to each band (2.4GHz versus 5GHz), and basically all routers these days will let you create just one SSID across both bands. What happens if you get stuck with a slower-speed (300mbps) client clinging to the 5GHz band? The answer is it sucks, unless you're on the ultra-modern AX platform, because it drags the entire radio spectrum down to the lowest speed common denominator. When assigning one SSID to both radio bands, a good quality APs can punt a shitty slow client onto the 2.4GHz spectrum to keep the nicer, well behaved 5GHz clients cooking at high speed. Even better, there are sometimes known-issue wifi cards in the world which have some sort of RF problem, so a good AP controller will keep a list of known MAC address prefixes to keep these known-issue clients off the problematic bands.
Now to Orangpelupa's point: 100% power isn't really what you want, and you should probably try to avoid for best performance. He's very much correct in that bars do not specifically equate to performance! A good AP radio set can dynamically manage power based on the signal-to-noise ratio of the connected clients. Why blast the whole neighborhood with 100% power on your 5GHz band, when the four clients connected to your AP can be covered at 50% power while maintaining full speed? Also, the higher tech radio sets can use a technology called beam-forming, where an incredibly slight phase-change to one antenna (on a multi-antenna radio) purposefully induces a positive type of RF wave interference to enhnace long range coverage to a given client without necessarily jacking the power to all-the-watts.
Plenty of people will be fine with a generic router from the local electronics shop, for sure. Still, a really good set of quality prosumer hardware can make a significant difference to you and your family's perception of internet quality at your house.
