The 372xp is a very good saw. One of the all time best.
Saw historians, please interject if I get this wrong, but here's how I think the OE/XT labels break down.
372 has 3 major iterations, kind of like Stihl 046, ms460, ms461 though the 372 has a 371 predecessor more similar to the 046. The Original Edition (OE) 372 is a great saw with an unlimited coil. I think most of them had the "air injection" decal. Then there is a OE that was given a limited coil. Theses typically have a standard decal and are also excellent saws. Both OE's had the same fairly traditional cylinder design with a decomp valve on the side.
The latest 372xp is a strato saw. It has the x-torq strato technology found in many younger Husqvarna saws. It is commonly referred to as a 372xt. It has a decomp valve on top, says x-torq on the decal, and is also an excellent saw.
Many saw guys (like me) dislike strato technology and prefer the simplicity of the earlier versions. They are slightly easier to work on and replace parts affordably though all three versions interchange well (along with the 365 and 371). When buying a used 372 you could end up with parts from many different years.
No saw is perfect. The 372 likes to wallow out top cover bolts and has potential to overheat in the inboard clutch. They have several different carbs (none are computerized) and some are better than others. They're pretty heavy too. But I think they're my favorite saw EVER.