I make a lot of charity quilts and I use Hobbs 80/20. Its warm and snuggly. Sewing 4" apart on the smaller quilts is not big deal - but sometimes I don't want to do this much quilting tho ha ha
recently I discovered warm and plush batting and really, really like that. I don't use that for my charity quilts, because I have to pay a litte more for that. But its great batting, drapes beautifully and can quilt up to 6" apart
I will NEVER buy quilters dream wool again. When I used that it bearded all over - I was very very disappointed. I often wonder how its doing now that I gifted it.