Which images do you find problematic Steve? The EXIF data is available for the test images from the link included in the link you provided (boy that was sort of a convoluted way of saying that,,, LOL).
Yeah at ISO 3200 there was some noise evident in 100% view, and there seemed to be some noise evident in ISO 1000 images that were a bit underexposed. But I have always read that one should not judge noise at 100% view on a monitor. But even at that, it is a lot better then what I have now can do.