sorry for multiple post. i keep thinking of new things.
Melody = Quilter's Choice (BLQC2)
Elizabeth = Decorator's Choice (BLDC2)
both went through name changes, but as far as I can tell, nothing changed between name changes, except they changed the housing color for Elizabeth. So if you want detailed reviews on both, do a search on the older name, and you should get a good idea what people thought.
Both machines have raving reviews. So whichever machine you decide on, I think you'll be very happy :-)