I used windsor once. it wasn't bad. I used it in a Cooper's sparkling ale clone, and the beer pretty much tasted just like the real one.
I suspect the reason some people don't like this strain is due to it being a moderate attenuator, which means it leaves some sugars behind, and doesn't reach as low of a fg as other yeasts. that is a valid reason if you want a dry beer, but in some beers you don't need a really low final gravity.