I have ported saws of about every size out there, and they all run great, but my two go to saws right now are my MMWS 261 C Ver II and my 462 (just a muffler mod).
Comparing 572 to 462 is like comparing 2 different saws - they are not comparable IMO. If you are looking for a saw that is heavier and will balance a longer bar, you will likely choose the 572. It is well built and likely has more low end torque due to the longer stroke.
If you are looking for an all around saw with great power (stock), a saw you can both limb and buck with, you will love the 462.
While I love running my ported saws, my M Tronic saws don't need to be adjusted if the temp changes, or the elevation changes (my home is at 500 ft, my upstate property is a 2,200 ft, most of my traditional saws don't like the change). I also like the smoother spring AV, and the clean air filter tech built into these saws.
The only caveat … don't repeatedly try to run a M Tronic saw low on fuel … the computer will go "rich" (into protect mode) and it will take about 6 tanks to clear it.
I have a 20" light bar on my 462. It has real 70cc saw power, and is as light as many of the heavier 60cc saws. (It is by far the lightest 70cc saw out there, and about 1.5 lb less than a 572).
IMO, the 572 and 462 are both great saws, but they serve different purposes. The one you prefer will depend on your needs.
Hey, a good running 10mm 044 will also give you great power and low weight (I have one of them also), but they are getting hard to find and you will need to clean the filter much more often. Everyone is different with what they feel, but I go back and forth between rubber AV and spring AV and barely notice the difference. The biggest difference I notice is spring AV is smoother out of the cut.
Conversely, I can't stand a saw that does not have AV, but they don't seem to bother some other folks. We are all different and have different cutting styles.
I apologize, as I think I just gave 3 cents instead of just 2!
Good luck with your decision.