where is the best place to buy rolled fiberglass insulation in the midwest? we need some in the attic!?

what is the best brand? does it really matter?.whatever is on sale good enough?

Just cook them until they are done.

any home center, 1 brand is as good as anotherIf it is the first layer of insulation, be sure to have a vapor barrier against the warm sideHowever, if you are adding to existing insulation, get the unfaced (no vapor barrier) stuff.