The 365 has been around a long time in various forms.
The XT was the last of the family and a fine mid range (well what I call mid range- might be big for others) firewood getting saw- well suited to the 20-24" bar range for softwood the soft/hardwoods and maybe 16-20" for true hardwoods.
The 572 is a newer design and has a bit extra on top of the 365. Has been around long enough to be proven and has the advantage of auto tuning, has a very good power to weight ratio.
Both are very good saws and I guess you choose the one that best suits your conditions, your timber and your wallet. The new saw will come with a warranty, brand new bar, brand new chain though.
