w220
449
As other have said, two totally different watches
The 5167 may be the sportiest Patek you can buy, while the 5120 may be the dressiest Patek you can buy. They are not really comparable.
One way to solve the problem is of course to get both
Here are some pics of mine. Sorry for the terrible quality of the pictures, I think there is something wrong with the lens on my camera.