Michelin pilot A/S 3+ vs Summer tires
Here is an interesting article on the subject at hand:
https://www.minimumtread.com/michelin-pilot-sport-as-3-plus-review.html
I own this Michelin tire and have been very pleased with it. The wet and dry traction are excellent, ( Not PS4 excellent), but probably on the same level as a tier 2 summer tire. The below freezing traction is great. They warm up great, and I feel confident in light snow.
For me, tire choice is mostly about location and finances. I am in the Louisville, KY area. If I was 100 miles to the north, the calculus would change a bit. I have to be at work on time every day. I commute about 17mi each way with a mixture of b roads and state hwy and interstate. We had snow on the roads 4 mornings this winter. Usually it was reasonably cleaned up by the evening commute home. Hardly a reason to invest in a 2nd set of wheels and tires, or run dedicated summers and winter setups. The Michelins leave little on the table for wet and dry traction. Good treadware, not that noisy, light snow traction, and high performance traits make this a very good all arounder. They are perfect for my needs. This is not the case with many a/s though.
Now if you live furhter to the north or in a mountain region it is without a doubt a good idea to run dedicated sets of tires. Any area that receives consistent snowfall for multiple days in a row.
Southern residents should probably just use summers.
So, in short, everyone is correct.
To the OP. Being in Denver, I would probably be inclined to run dedicated sets if it were me. But if money is a consideration then the Conti DWS 06, or the Michelin A/S 3+ would probably fit the the bill for a year round tire.