I'm starting to shop for a new (or used) P bass and I've been reading about how much Fender has improved the '08 models. Are all the '08 basses better quality or did the improvements happen as of a certain date? In checking any site I could find that lists Fender serial numbers, they don't list any number newer than 2005. Are there any visible changes to the improved '08 models that would identify them? Just look for a Z8xxxxx serial number and assume that it's better? I know the usual method of finding a good Fender has been to just try every one you I can find until one stands out, but are the '08s much more consistent? At the new prices I would hope so, but let's not open that subject here.