I'd say the 630 is an excellent deal at $500, but I'd make sure it's got a real factory warranty on it. Even better would be a factory refurb through an authorized dealer. The speaker selection looks good. The M3s may or may not be shielded enough; we've had some problems around here with M2s not being shielded quite enough. How close are the speakers going to be to the TV? If they're not right up against it, it should be fine.
Be aware that the custom finishes are not wood. They're vinyl, but quite nice even so.
Welcome to the club...
