[Ron Ramirez]

The console versions, which I know you are referring to, are very similar in appearance. The 650 is a bit bigger, though. Plus, you can also tell the two apart by looking at the trim at the top, along the sides curving around to the front - it is flat on the 630, but has a groove in the 650.

You could always ask for a photo showing the back view of the set...hopefully it wouldn't be as dark or fuzzy as the one the seller has posted of the front of the set...