The Hella 3000 features a plastic housing as opposed to the Hella 4000, which is made of steel.In my installation the 3000 was more suited due to it's lighter weight.I also liked the feature of wiring in of the "city light" function on mine.
I have owned several Hella lights throughout the years and find them of nice quality.One item I would like to see added on 3000, is the availability of clip on clear covers ,like the model 4000.Only black grill gaurds are available from Hella.
The blue lense is attractive but would probably prefer a clear "eurobeam" lense ,if I were to re-purchase. I would also hope that the "pencil beam" version was available as the same savings ,but usually costs more. Overall I am pleased with the set I purchased.