Two solid bucks and four adult does thus far this season, all from trees although I've passed up several from ground blinds and made some cool stalks this year that ended with me passing the shot. One of the coolest was when I rattled, grunted, and shook a sapling to draw a P&Y caliber buck to within 20 yards while I was kneeling in cover. Exciting.
Approximate tree stand heights for me, though, might be a little surprising to some: bucks at 8' and 8', and does at 10', 10', 12', and one from my tallest stand at about 14 or 15'.
And one of my best hunts this year I passed up 4 or 5 bucks from a stand about 6 1/2' up in a tiny cedar, with some of those deer coming as close as 2 yards to the base of my tree. Great hunt.
This survey didn't allow me to vote more than once, so the end results may not truly reflect the number of deer taken ground v. tree for the hunters here as I would guess many shoot more than one deer.