Crimedog,
Do you really need it? Probably not, all the calls you have currently will certainly call in a harvest gobblers, however, a glass call will be an added element in your already established arsenal. Perhaps that finicky bird will hammer to nothing else. You never know, I've seen it happen.....box, slate, mouth, etc...then glass..and baamm...here he comes. Check out the glass by
www.rivervalleygamecalls.com . I believe it comes with two strikers making it an all weather call. I've used it in the rain with success with the acrylic or carbon striker as well as dry with the hickory striker.
<font color=blue>Good Luck and Good Shooting</font id=blue>
<font color=red>
Rob</font id=red>