I have had both and although the Quest 2 has shitty lens adjustment that doesn't fit my IPD (pupillary distance) correctly, the clarity on the Quest 2, thanks to the higher resolution display and full-RGB pixel matrix vs pentile on the Quest 1, was just miles better than on the Quest 1 which had a better IPD adjustment system that fitted my eyesight. Couple this with the lower weight, more comfortable strap (I know), more powerful processor, higher refresh rate, the Quest 1 can't even hold a candle to the Quest 2.
Sold the Quest 1 immediately and kept the Quest 2.
Although I wouldn't use either as a monitor replacement for more than 30 minutes. The tech is just not there yet for eye-stranious work like reading small text like code. Best kept for entertainment and content consumption.