I made a major investment and purchased the new Canon flagship body EOS-1 DX. I received the camera yesterday after having been waiting for about 5 months. I acquired a 7D a couple of years ago on purpose to get more resolution and speed compared to my 5D and 1DMIIN. However, I never liked the quality of the pics out from 7D because of high noise level even at fairly low ISO values. I made some trial shots with 1DX, and I can confirm what is said in the reviews; the quality of the pics is excellent with almost no noise at least up to ISO 1600. The pic above is shot using ISO 800 ( some sharpening and a little noise reduction done) and there is practically no noise (click twice).
I will head to Lapland for a month or so and make extensive testing of the new camera. The sun is stills shining long hours there so I will have lots of time to shoot.