What Macbook M1X chip options are best for Blender

Can anyone advise what's the difference in performance between the chip and memory options for the new 16 inch Macbook range? If funds are tight, what's the best options? Is paying an extra £100 between 24-core gpu to the 32-core gpu worth it? I'm more interested in working performance than rendering times. Unfortunately there's still no youtube videos demonstrating the performance of different configurations options. Thanks