@ chad6713
First off, do a search. This has been discussed quite a bit in the last few months. It's good to ask but everything that's going to be said is already there, several times over.
The 372xp will be replaced by a 372xp strato saw in April. It is allegedly the same shape and design as the 372. It may be slightly taller to accommodate the different P&C. it seems that this is mainly for name recognition, the 372 is world famous by now.
It was said that it appears as though the 372 strato will not be offered with as many options as the 576xp. I think someone said heated handles won't be available on them or something like that.
The 576 is also available with autotune, a system which basically constantly optimizes the tuning of the saw to ambient conditions. There was 1 report of a technical bulletin that suggested issues with the system, however the report was not corroborated with any experiences of individuals on here or by Husqvarna US, as I understand. Positive experiences, however, have been reported on here. Husky is also including the system on their replacements to 357xp and 359.
@Muffler Bearing:
whoever compiled the data for that chart at husky is an idiot. ALL professional, currently available husqvarna saws have low-vibe. This just means the spring isolated AV system. Furthermore, the 576xp has better values for vibration reduction than the 372xp. It is one smooooooth saw to use. you really can barely tell that you're cutting.
Also, it has adjustable oil pump. All husky pro saws seem to have one.