I switched from the same model three months ago. It’s night and day. I used to have my fan spinning all day; with the new one, I only heard it once since buying it, even in perfect silence. Things that used to slow down, now run in parallel. The battery keeps up with more than a full work day programming, comfortably.
It’s a big difference, but the battery of a new 2019 MacBook also got close to a work day. The M series should last a bit longer, but after 5 years it’s a gamble with batteries…
