Look at Schneiders catalog or online at
www.sstack.com
They have great blankets and sheets with warranty for a good price. I have had people tell me nothing but good things about them.
I am also in Minnesota so I understand completely!! This is the 1st year I have started blanketing as well because my boy just isn't able to get into a shelter at our new place.
Another place that I just found here in MN is
www.suburbantackstore.com She is in Farmington and sometimes you can get a great deal (with no shipping) and don't forget about the tackswap this weekend in White Bear!!
Good Luck and welcome!!!