Ooh, this thread timing is great. Only today I was wondering what's around in high(er) quality longer range zooms. I had a work trip overseas next week, and was thinking of playing tourist. Now last time I did carry 7D + 70+300L but the size still was a bit much when trying to travel light. And my compact (Sony HX9V) is ok for a pocket camera, but I wanted both more zoom and quality.
Having looked at those raw samples above, I think I'd be happy with those results and accept that tracking AF might not be like a DSLR.
Canon 1D, 300D IR, 450D full spectrum, 600D, 5D2, 7D, EF 35/2, 50/1.8, 85/1.8, 135/2+SF, 70-300L, 100-400L
EF-S 15-85, TS-E 24, MP-E 65, Zeiss 50/2 macro, Sigma 150 macro, 120-300/2.8 OS, Samyang 8mm fisheye