no generalisations possible ! usecases differ !
I was able to run my M1 into its knees, based on the overall databus speed becoming its bottleneck.
This are special apllications, more on the realtime-play sounddesign side of the things.
Not what many folks would do, i´d suspect. But......"one possible bottleneck"
a M2pro ( which i run now) has double the databus speed of a M2.
real live numbers.
definitly M2pro for music production ! if funds allow.
If funds are very short anyway.
A 2nd hand M1 instead of a new M2, would i consider to be a viable idea.
Then, step up to M2pro, when "these" prices do fall. Or jump "then" for the upcoming 3nM units.
......running applesilicon macs only second hand, allways one Generation behind, could be a clever strategy. since the M1s are allready so and so much powerful.
i personally see no point or weight, towards the M2.
Go one better, or limp one behind.