K-5 IIs vs K-5 II - can you tell the difference?

I don't really have too many people shots  yet, mostly because I don't  yet have my good lenses (gotta wait till christmas to order). My best lens is my 50mm prime which is capable of decent resolution at F8 or so. The only noticeable moire I have to show is a crop of a house fly, in the eyes. The thing is, the people who are citing moire as a reason to not buy a IIs are also the people who say you only notice a difference in sharpness at the pixel level. Well, I am offering the full rez shot of the fly so you can see the full image and crop in yourself. I could see no moire till I cropped in a ways. I suppose if you are a fashion photog it may appear more often, but I have taken hundreds, maybe 1000 shots in a few weeks and I rarely see it.