Honestly in this area, it's the perceived superiority of a product because of a decal/emblem.
If poulan stated they wanted to get back into the landowner market and made this saw, Stihlheads would have butchered this ms280 for the above stated reasons. Can you imagine poulan making this saw and having the balls to charge $500!! The 330 is a better saw in virtually every way except for the name, only issue is the oiler is crank driven instead of clutch driven, and it sold for what $300 retail?? It can be upgraded to 61cc, decked, ported etc.
The 353, non pro, can be upgraded to 346xp, better a/v, lighter, can be ported, bottom line a better saw.
The cs520, non pro, better a/v in wood, pro 4-port transfers, lighter, a better package.
I agree the the 290, 039 are reliable saws, and yes heavy for there power. That's what separates a pro saw from homeowner saws...power to weight, construction, and features.
The ms280 is an over priced ms250, a ms290 is a much better value.