I have the Hamburg and can comment on that. I had very high expectations of this mic when I bought it, but was ultimately rather disappointed with it. For one thing, I noticed that, tonally (i.e. in terms of the frequency spectrum), it sounded almost exactly like my CAD M179 which costs quite a bit less money. However, the main difference between the two is that the CAD was way, way "punchier." Everything that you record with it comes out much more forward sounding in the mix. Obviously, this is a very, very GOOD thing in a vocal mic, and the M179 ended up getting chosen over the Hamburg in EVERY occasion.
I suppose it might end up being used in a situation where I need an M179-type sound, but on an instrument that isn't going to be a "main" instrument in the mix. But this doesn't make it a very useful addition to the mic locker. Consequently, I recommend that people stay away from the Hamburg and just get an M179 instead. Of course, as far as I'm concerned, the M179 is such an incredibly useful and cost effective mic, I think that everyone that does much recording should have two or three of them, anyway.