Boy I really started something with this chrome thing! I would say cost for me is the big deal as well. My number one reason for getting any camera is for the photos I want to make. Hell, my M8 has over 70,000 exposures on it and it is still going strong! It did cost me $4,700 USD, but it was worth it many times. Now for the 7K plunge! All I want to say is for that money, Why not a chrome model as long as I am blowing 7K. I am waiting, but will not forever, and in the end I will make a choice for the photos, not the camera finish. Right now, My M8 is fine, and I am even considering another one as a backup (I have black chrome and may buy a silver chrome M8). More importantly, a friend of mine who also is a professional, buys every other generation of camera. The M9 , although much improved, is not better than the M8 by leaps and bounds, but is a logical progression to the next level. For me, the M9.2 or M10 will be the real deal for me. I do however really love chrome (I have a fetish I suppose, and a chrome M9 would probably cause me to buy.
Another point: Look at gun enthusiast magazines. I do not own a gun (I am scared to death of them) but you can see the expert marksman loves the guns he or she uses, and many take pride in the guns they own, especially the many metal finishes, etc, that are available. many are very professional. I guess it is a personality thing, and my camera for me is a very personal thing since i see it as an extension of my eye mind and body. In my case, chrome really excites me!