Here we get it all,snow,ice,wet we can use studs between nov. till march,
I am looking to get something that would be decent in snow,and ice,hopefully with good tread life,I will drive about 30 k per year
With studs, you'll get what would likely be the ultimate in terms of ice traction, given your typical winter conditions (I looked up what your typical winters are like: Weather in Nova Scotia | Nova Scotia Temperature
) - usually, "Studless Ice & Snow" sub-genre "winter tires" do not come into their own until the temperature has dipped even lower (REF: Winter Rubber! 09+ Owners check in!
Noise from the studs is truly your only real worry, given modern tire technology. Properly installed studs on modern tires will not eject even at highway speeds, and there is no longer the old concern of "you'll kill yourself in the rain with studded tires," which is a modern myth that's been proven false by Russian and Scandinavian winter tire tests of the past decade.
That said, is November to March a good time for you to run with studs? The main concern here is short-notice adverse weather events during the transition months...if given a day's notice, are you able to effect a tire change that will keep you safe (regardless of the local laws: i.e. I doubt that anyone is going to cite you for improper equipment if the whole town is dealing with a late-April snowstorm)?
That said, the truth of the matter is that as long as there is no wintry precipitation on the roadway, your summer tires will serve you just fine even as temperatures start to go down towards freezing. For most of us, however, we're not going to be willing to gamble with the possibility of encountering an unlikely patch of ice during those transition seasons or a sudden sprinkling of snow on the roadways catching us out, so we'll usually switch tires a little earlier than actually necessary in the fall, and perhaps a little later than necessary in the spring.
And that brings us into your concern of the fall and spring seasons. During these transition months, it's not only unseasonal wintry precipitation that we need to worry about, we also need to worry about unseasonably warm temperatures. Under such conditions, the safety considerations under which you've ostensibly purchased a set of dedicated winter tires are reversed - as you start aggressively winterizing the tire, that tire will start to backslide in terms of its clear-road and, even more concerning, wet-road performance.
Further complicating your picture is your mileage traveled. 30,000 kilometers (or is that 30,000 miles?) per year, nearly 20K miles, is going to do a number on most winter tires, particularly if you used them for a lot of driving in the warmer parts of the transition seasons - safety (in terms of wet and dry performance) aside (and that's a big aside, BTW, look at the data in this 2009 Car & Driver
comparison of four Michelin tires: 2009 Winter Tire Test - Comparison Tests
) - they're going to see a lot of tread wear. That tread-wear will translate both to decreased snow/slush-moving capability as well as, perhaps as an even more concerning double-bogy, further and even more drastic decreases in wet-road capabilities.
In your shoes, I'd look for the ability to quickly transition tires based on short-term weather reports - meaning that you'll want to maintain a set of rim-and-tire combos in the corner of your garage, to swap-out with your summer set, at the first hint of seeing wintry precipitation on your roadways. Given summer tires will not have any problems even as temperatures approach freezing, as long as the roads are clear of precipitation, you should be fine, there.
As to what winter tires to look for, I'd likely be looking at either "Performance Winter" tires or even "Studless Ice & Snow" tires. These will allow you to be able to use this set of tires even outside the November to March restricted period for studded tires, which will give you better leeway in terms of the above switch-over point as based on unseasonal weather.
Whether you choose "Performance Winters" or the "Studless Ice & Snow" tires will then depend on your personal bias of what type of performance and safety-envelop best fits your personal needs. Additionally, it is possible to run traditional studded winter tires without studs. While such use would obviously take away the tire's capabilities on hardpack snow and on icy surfaces, such tires typically are of a more resilient compound than the "Studless Ice & Snow" tires, and will likely last longer in terms of mileage, which is a concern for you.
Overall, despite your desire to run your alternate set of tires as a "three-seasons" tire, I would not recommend "All-Season" or "All-Weather" tires as by your mileage, you will eat up tread depth in a rapid manner, which would likely make your second winter a much different driving experience than your first, with those tires in place.