1. Do search for opinions as to which one is better.
2. The MS 361 was discontinued and made MS 362 because of increasingly stringent EPA regulations. The 361 was a conventional two stroke motor whereas the MS 362 is a "strato" saw (like the 441) which has significantly better emissions. The price increase is at least due in part to the fact that strato saws are more difficult to make, require more materials (hence heavier weight too) and are a bit more complicated in design. They are also likely charging a fair amount of money because they are covering some of their costs in retooling assembly lines. Also, if you haven't yet realized, everything is going up in price. Any new replacement is always more expensive. Also exchange dollar to euro sucks right now so they're kind of getting hit hard in that regard. They're not getting the same amount of money they used to for what you're paying.
whether it's better or not, or worth the money (further extension of being better) is a matter of opinion. A lot of people who have strato saws like they more. They may be heavier but most people say they have a nice powerband (i find this to be case wiht my 576xp). However, it is arguably less nimble than 361. I handled one at the dealer side by side and it didn't seem to lose that much. but again, $70 is $70.
So search around, maybe some people will weigh in here, but there's plenty of reading to do. Everyone who has had a 362 has liked it, for the most part, I believe.