Best Medium Brown Color pants

I'm looking to eventually get a good pair of tropical wool pants in a medium brown color but the problem is there doesn't seem to be a consistent opinion on what color a pair of medium or mid brown trousers should look like. So far I've found about six colors that look good but I would like to know what you guys think is the most versatile and goes with jackets such as a navy blazer, a casual navy or olive linen jacket, and a light/medium brown, taupe or oatmeal color unstructured wool/linen sport coat. The first two are from different sites but the last four are courtesy of Spier and Mackay.
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