That's not right.... The L800 was largely contracted out, it's well known that the N9 was far more "in house" than the L800*, that slowly changed with the 900, & is probably very different with the 920 now. You have variations in housing quality (which includes colouring/coating among other things), some white housings will look better than others, it's the nature of mass production. It MAY be possible that "whiter" housings & better glass fronts are being reserved for the L800's etc, but generally production doesn't work like that, too inefficient... More likely is that because we've had much greater no's of them being produced for much longer now, the probability of having better quality builds** in circulation has become higher. *This was done because Nokia didn't have the capacity for qualcomm related tech at the time, so in order to get to market quicker, most of the work was contracted out, because of the specialised (stop-gap) design of the L800, that wouldn't have changed since. **at least in SOME aspects.....