OK thanks for that explanation. I tend to really stress over things like that, but maybe now I can take the same approach you do which would really reduce my stress. I know what you mean about weight when it comes to the 1DS3 and a long lens, or even the 24-70L. My arm starts hurting after bout 2 hours or less. Yes the tungsten mood looks nice to me. Thanks again for the explanation and good job.
The weight of cameras like the 1Ds3, D3 and D3X are a big negative for me. That weight disadvantage combined with the high price, excludes me from even contemplating a purchase, and the same applies to DBs even though I already have a Mamiya RB67 and a few lenses sitting on my shelf.
The last time I went trekking in Nepal, I carried around my neck both a 5D with Sigma 15-30 and a 20D with 24-105. I suffered just a bit from back strain. When I next go trekking, it'll probably be a D700 with 14-24 and a 50D with possibly the new EF-S 18-200 which seems remarkably sharp in the centre although disappointing at the edges. However, for candid, spur of the moment shots, the corners are often not important.