I generally use Warm & Natural or the bamboo batting they have at Joann's (don't remember the brand, maybe Fairfield?). Quilter's Dream cotton feels really nice, but I found that it produced more fluff all over as I quilted, which I find annoying.I've just started using Quilter's Dream wool batting and I love that. I use them all on my domestic. As with all things quilting, "best" is a personal preference and just takes trying different things until you find what you like.
Nancy