I have the Dynapro ATM on the Sequoia right now. It's also snowflake rated, is an established solid winter performer, and is a really quiet road tire. It is a great tire for the price, although there are some interwebz rumblings that it doesn't perform as well in winter in the second half of its life and it seems to be slipping as a top pick.
We usually just keep a tire for the first 2/3rds of it's life, since that is the best part, then we sell them and put that $$ towards the next set. We have a pretty good market for used tires here and we can usually recoup $150 or so towards the new rubber. I don't not understand running tires to the end, especially winter tires.