2005 Navigation System Update For 2004 Rx330

[RX330inLB]

I am looking for information that describes what's new in the 2005 Navigation System DVD for my 2004 Generation 2/Generation3 RX330.

I purchased the 2004 update from my Lexus dealer and was disappointed to find that it was pretty much identical to the version that came with the car. I knw that new streets were added to the map database but I live in the Los Angeles area where the infrastructure is pretty well established so new streets aren't really that helpful.

Many of the large chain stores like Circuit City, Barnes and Noble or Boorders Books are not in the navigation system database, which bothers me as a friend of mine has an Acura TSX with a factory installed Alpine nav system that finds these stores and even smaller non-chain establishments with no problem.

I don't want to invest $300 for another upgrade that's just about identical to what I already have.