I have a Mark III hunter and love it. The main difference is the location of the mag release (It's now where it should be in my opinion, right under the thumb), fiber-optic sights, and the loaded chamber indicator (which for me is a non-issue). I shot it right along side my buddy's MArk II and they are similar in accuracy. If you like the polymer frame and 1911 grip, then by all means, go for it, they are fine handguns.