My previous car called for 20w50 year-round. I experimented with several 20w50's and found that valvoline conventional 20w50 had the best winter performance (no lifter clack on start-up in the cold). It never burned or used any oil at all for the 225,000 miles i owned the car.
For about the last 100,000 miles i used Napa branded valvoline 20w50 dino oil, and it seemed to work the same.
I've also found the other "valvoline" products to work well (pyroil, zerex, etc...).