As a side sleeper and a toss-and-turner, bags never made sense for me. Always ended up with the hood over my face, my legs tangled up, would wake up and have to spend time getting it all straight again.
The quilt is way easier for me, rarely get cold spots, and I wear separate head insulation. If I wake up cold, it's usually because I've been on my side with less surface area contacting the TAR Neo-air. Flipping onto my stomach or back seems to warm it up better.