I need some advice: I have been using a Sea & Sea DX-3100 and been moderately satisfied with the results, other than slow shutter release, low resolution (3 megapixel) and the macro function usually focuses at a plane other than the subject. Ive been reading reviews about the DX-8000, which appears to have resolved the first two shortcomings of the DX-3100. I am considering purchasing the DX-8000, but I have a terrestrial Nikon D-70. Would I be better off getting a u/w housing for the D-70 instead of buying the DX-8000? If so, what housing should I consider, and what Nikon lens is compatible with the housing? Id like a zoom with macro capability. Thanks in advance for your thoughts.