I have one from Suunto. I bought it because of the price and a glow in the dark ring for the scale. It does not need to be set for different inclination (which require to change the capsule) and has an djustable declination.
Iīm very satisfied with it. Tilting is much less of a problem than it was with regular compases. I think this is an advantage when you are tired or in rough terrain. I prefer it over a regular compas anytime even when I donīt plan to go to the southern hemisphere.
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If it isnīt broken, it doesnīt have enough features yet.