If you have cold winters make sure you pick a footing that you can mix calcium chloride in to. I like the GGT footing but don't think you can mix the salt in.
I have the footing suggested in the "underfoot" manual from the USDF. It's masonry sand, green sawdust and calcium chlor. I don't have to wet it down in the winter at all.
"When you think you don't need a coach ...then you're in trouble" Don Imus 2012
We have a geotextile flooring and its absolutely great. My previous barn also had this footing and I noticed a lot less injuries, so when I had to move I made sure I would move to something with the same footing.
Personally, I like a coarse sand - easier to maintain, less expensive when you have to replace footing. But I have to maintain my own footing and pay for replacement footing - if it was on someone else's time and dollar, my answer might be different