I think the JB 7 looks way nicer than the 4. The glass on the 4 didn't scratch very easily though, so maybe after a few months I'll change my tune.
Mine has arrived and I think you're right. It really is stunning, even though I'm sure it will pick up lots of marks and scratches. To be honest, the 6 it's replacing is pretty beat up after 2 years, although not quite as much as the 5 my girlfriend can now retire in favour of my old 6