I imagine their development pipeline for the M* chips is very long. M4 is already being masked and M5 is being finalized with M6 development progressing and perhaps the M3 design team being ported to begin work on M7. Still very impressive but M3 has likely been prototyped since M1 was announced. I wouldn’t be surprised at all if they go big on a design and iterate down to what’s feasible with current manufacturing and yields.

Used Apple tech has been the most reliable in my experience. I’ve done plenty of trades on both HWS and r/appleswap