I really enjoy the recycled tire "rubber mulch" footing that's mixed with sand, or dirt or whatever. Around here, the state will sometimes give barns a grant for using it as their footing, making it a tad bit more affordable. It doesn't have to be taken care of quite as meticulously as sand, which is horrible when not maintained, and it is easier in a fall (haha, I have tested both types of footing out in this category.)
It really is easier on horses' feet, too. We have the rubber footing in our indoor and sand in our outdoor, and any time it rains the sand tends to stiffen up and hold the moisture for days to the point where it is uncomfortable for the horses to walk on.
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