I have both and using both too… The M1Pro is my own, it has 32 GB ram, the M2Pro is from work, it has 16 GB ram.
99% of the time, I don’t feel any difference at all, two machines run identical.
In terms of RAM usage, 16 GB does use swap a lot, from time to time I’d run activity manager to see memory usage, I’d day 2-3/10 times, it used swap, when I, say have all the apps for work (mail messenger calendar and etc), plus a few Figma tabs, it is guaranteed it will use swap, or say, when I use it for automation tasks that require a lot of ram, for example, if I convert 1000 raw photos to DNG in Lightroom, or run batch Photoshop actions with a few pictures, swap will definitely kick in, and the extra ram will help, though the M2Pro uses swap, it’s slower, but it’s not noticeable slower, I can wait.
A benefit of the M2Pro is the connectivity as well, it allows 160 mhz, which means you can get closer to 1 gigabits connection, my M1Pro can only peak around 650 mbps, but my M2Pro can peak around 850 mbps, do you have a fast internet connection? Is the speed important for you? TBH, 650 mbps is plenty fast for most things.
M2Pro “seems” to run warmer than the M1Pro, my M1Pro only gets warm after I ran some intensive tasks, but M2Pro is warm even when after a conference call.
TBH, day to day, I don’t feel there is any significant difference at all between the two machines, if I were in your shoes, I’d pick the M1Pro and use the left over money to get something else… Is M1Pro with 32 GB ram not an option? That’s be my number one choice.