Ultimately you need to try then in your hand in a store. I used to own a Minolta 7D, and that was/still is unmatched by any camera in terms of ergonomics (and colour IMO), and the D200 is similar in respect of having front & rear command dials. The fact canons only have a front command dial for me sucks, but we each find a preference of our own, and I would always recommend trying them in your hand before paying out a lot of cash
Cheers!