So this is an awesome topic. My wife and I started out in 2015 buying the base Airs and using them for a few years then upgrading. 2017 we bought a midline MBP and noticed the enjoyment factor was a lot more. In 2022 I finally went loaded M1 max and ... yeah... I can say that the enjoyment factor is 6x a base MBA for me. Of course price difference is crazy and I can use it for work if I want.
We got a base MBA from Best Buy for like $700 in 2015.
Midline MBP in 2017 was $2800.
And of course the loaded M1 is more than double the 2017.
So let's say $950 every 2 years vs $2800 every 3-5 years (my wife is still using her 2017 MBP today).
The price difference isn't all that much once you start going out that far, especially if you trade in.
We traded in our 2015 MBAs for almost 50% of what we paid for them. About 40% for my 2017 MBP.
I noticed the resale on the M1 Max is bad... lol. So if you're looking to save $, near base models and trying to keep them for 3 years is probably best. All depends on what you do I guess.
I'm planning on keeping the M1 Max for 5+ years if I can. It'll be the first laptop that I even want to attempt that in.