Depends, you're not really comparing apples - apples. Windsor Hills is a GORGEOUS resort, I own homes there, but Reunion is even nicer (although a bit further). Reunion definitely costs a LOT more. Like 3-5x more for a similar sized home, but you also then get daily maid service, etc. Are you a serious golfer? This is probably Reunion's main draw. Of course, there are 30+ championship courses all over Orlando, and Mystic Dunes (#2 rated in the area) is right next to WH. Is money no object? Reunion has onsite amenities like restaurants, the golf courses, and more, WHR doesn't of course, so I'd say it all depends on what you're looking for. If you're a golfer or you're looking for super luxurious Reunion would be a great choice, if budget is a factor I'd say WHR wins. We have friends in WHR who own in Reunion also, and they've offered to let us stay there, we're dying to try it out actually, and I own in WHR! (But I'm also a golfer!).
Hope it helps!