100mm f/2 Makro Planar Zeiss For Landscapes?

I'm looking for a sharp 100mm lens for use on my D800 for landscapes.  I'd like it to be sharp from corner to corner at f/4 or so and very very good flare/ghosting resistance.  CA I can deal with in post.

Although expensive, is the Zeiss 100mm f/2 Makro Planar a good choice?  If not what other lenses for my D800 would your suggest?  AF is not a requirement.

Currently using 105/2.5 AIS which is OK in the sharpness department, but does not handle flare very well.  I also have access to a 70-200/2.8VRII zoom (and soon to have the 70-200/4 VR), but many times I only want to work with a prime and sometimes size/weight are an issue which rules out the f/2.8 zooms . . .

Thanks for any suggestions.

- John

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