Warm & Plush, without a doubt (100% cotton, no scrim, no visible seeds). I'm getting the supplies to make my own suspension arm for my sewing table because it is also really heavy to have to be pushing & pulling through my machine to FMQ, but it feels really wonderful. I, too, love heavy quilts. I seriously want to steal my 3-year old niece's lap quilt away from her.
I only make crib & lap quilts, so I can't attest to how miserable it might be to try to FMQ a King quilt with this batting, but if you're willing to deal with the weight when quilting, that's what I'd recommend.