Forget about Zebra they are not in the same class os the other two. I have used Winners choice and Stone Mountain.

IMHO Winners Choice makes the best string out there but you do have to pay for them. As PA said the others make excelent strings as well I just think, from my experiances, that the WC strings are a little bit better.

I have not tried the Stone Mountains newer Dakota strings. They are suppose to be right up there with the WC.