I thoroughly enjoyed your review. I've been waffling between the 645z and the upcoming K1 from Pentax. You make a great point that the z with a quality lens should take care of needs for a long long time, which is something I've pondered as well. Landscape photography is my main passion
darylkottwitzphoto, so many of your points resonated with me, particularly the issue of huge dynamic range to work with.
A couple of minor comments:
1. For me, the link provided for the lens just went to a general Ricoh Imaging web page, not to a page specifically related to the lens.
2. In your sentence, "On an extended trip somewhere it is nice to be able to have to large cards fitted to capture all those huge files" it should read "...two large cards fitted..." (nit picky I know, but something I noticed).