Magner's is pretty good. I had that while in Ireland as well as Bulmer's, and I thought Magners was better. However I opened up a bottle at Thanksgiving to share with my family and they all hated it. Fair enough, I guess, since I just poured everyone's glass into mine and enjoyed it.
Funny story, C&C Group, the company that owns does Magner's just bought out Woodchuck. I wonder what they'll end up doing with it.