I haven't done anything larger than a king single yet, but I'd argue that it's worth the extra effort in quilting for a 201. Mine's got about 8" of throat, and I know lots of quilters irl who quilt kings on smaller machines.
Mine has an absolutely amazing stitch, pieces beautifully, and I've yet to find a project for which I've not had enough power.
I'd definitely recommend one in a cabinet; it essentially becomes a flatbed, and I put an Ikea tabletop with adjustable legs behind it to give it about 5' of depth.