The performance of this machine (CPU, memory, SSD, and GPU speed) is outstanding. The battery lasts over 10x longer than my previous laptop, a Lenovo Thinkpad T490. The display is bright (500 nits) and beautiful. The laptop is ultra-portable, weighing less than 3 lbs. Either the cooling fans on this laptop are so quiet that they're inaudible, or else they've never come on! macOS Big Sur is intuitive and feature-rich, and the fact that the OS is based on Unix makes software development a delight. The only criticism that I have with this machine is that it only has 2 Thunderbolt 3 USB-C ports; an external USB-C hub/adapter/dongle is required if one needs HDMI, USB-A, Ethernet, SDHC, DisplayPort, or VGA connectivity. The price / performance of the M1 MacBook Pro is hard to beat!