I like Hobbs Premium and Hobbs Heirloom and Hobbs Fusible - although the last batch of fusible doesn't seem to be fusing as firmly as the first couple of batches I bought. I like the low-loft, mostly cotton or all cotton types, so Warm & Natural is good for me, too. I quilt closely enough that it doesn't matter what the minimum quilting requirements are.
I make mostly vintage quilts or quilts that I want to look antique, so I never prewash them. I like them to shrink and puffy up the fabric as much as possible.
The non-fusible type, I open up and put into the dryer with a damp tea towel or two for five or ten minutes, so that the wrinkles will fall out. The fusible, I open up and lay it flat for as long as possible before I layer it.
For children's quilts, I love polyester, but it's a lot harder to quilt, so I don't use it very much.