I think I am obsessed by the 5D! I already have a 50D and I know the 5D is gonna cost some me some serious $$$. Is the upgrade REALLY worth it? Just how much better is the IQ on 5D than the 50D? I'm heading off to New Zealand in November where there are some seriously stunning landscapes.... Can someone please tell me something bad about the 5D so I can put my obsession to rest. However, if the good far outweighs the bad then I might just have to bite the bullet………..