I bought the fully specced out M1 Max (max for everything but SSD, I only got 1TB). Honestly I didn't need the extra GPU at all. I could have been fine with just the 10-core CPU. It's harder to know about memory speeds (Pro vs Max) since I don't have anything to compare with but unless you are doing something GPU intensive (the most intensive thing I'm doing is running 4 external monitors, 3x2K, 1x1080p) you don't need the upgrade. The other Pro vs Max difference that mattered to me was the number of external monitors, I needed the Max to run my setup that my old i9 ran.