Dream Wool is a wonderful batt- needles beautifully- really gives a quilt a beautiful finish-
Hobbs heirloom is a really good choice- you can find it in 100% cotton or an 80/20 blend (80% cotton/20% poly)
both are good batts- need to be quilted every 2-4" so it meets that requirement for you-
there are a number of Hobbs batts- they do not have scrim so are very soft- nice to quilt-
and all of them are washable-
the dream wool washes up very nice- my quilt with wool batting is a year round quilt- it is light weight- gives warmth in the winter- and breaths- is lightweight and cool in the summer