I am using M2 Max with 64 GB and never run out of memory so far while using PS,Ai, Ae and Pr simultaneously, I usually check the activity monitor to check memory usage, sometimes the memory pressure is kind of high.
For me, 64GB is fairly sufficient, but if budget is not a concern, I recommend going for 96 - 128GB.
In my case, 64GB is kind of enough however I would recommend 128 if there is no budget limit.
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