Just installed Nokian Hakkapeliitta R on the Volvo. I had the RSi on the TL and I tought these were the best winters I ever had. Well the R is another step up from the RSi. Very smooth and quiet on dry asphalt with good grip, incredible traction and control on snow and slush (tested on the 5 km access road to ski slopes

)Yes, they are a little more expensive but they are worth it in my opinion. Much better than the Gislaved NordFrost 5 they replaced. Nokian also advertize them as the lowest rolling resistance winter tire available. If I gain .1 or .2 L/100 km, that's worht it.
I also considered the new Hakka 7, but since I was not going with studs, I preferred the R which has more sipes. Highly recommended!