The story for the M1 Macs just gets better. Another review was posted today (11/25)
comparing the new M1 Mac mini to a recent high-end Intel-powered i7 Mac Mini with and without an external GPU. Result: the M1 Mac Mini mostly blows away the Intel Mac Mini.
Link: https://www.youtube.com/watch?v=59gAjXT7qyw
M1 Mac Mini vs Intel i7 Mac Mini + eGPU for Pro Apps!
Even if you need more than the two USB-C/Thunderbolt ports in the new M1 Mini, you are still in better shape buying the M1 Mini plus a Thunderbolt or USB dock instead of an Intel Mac. Far better performance at much less cost. Plus, little or no fan noise.