We've used a 562xp on a 24 inch mill works fine, also have a 572xp. These saws are very good in my opinion never had anything happen to either one. We cut a lot in the winter, we farm, I'm not a logger.
What length bar did you have on either of them? The 572XP is on the list as well. But the 562XP seemed like a lot of saw for the money.