well, this question was originally posted back in '05, but since it has resurfaced, I'll give an update on my result--I went with a 15 werner player--got a screamin' deal--and I could not be happier--would have had to special order a 0 degree, i.e. $$$, so it was a no-brainer.
I have yet to paddle a 0 degree, but having paddle 30s and 45s since getting my 15, and not liking the greater offset, I'm more convinced than ever of the symetry of paddling and that any advantage obtained by an offset of any degree on one side is counteracted by a corresponding disadvantage on the other side--so, if one were available, I would prob. go for it, but I have never seen one in all the time since I originally posted--
and my player is 3 seasons old, so I'm about to start looking again
Thanks to all who posted their thought on this--I think it's a good discussion, an issue that isn't really given a lot of consideration