Anyone growing Razzmatazz grapes?
 

After years of no real grapes from my 3 or 4 vines (i usually remember to spray them at the start of the year but not again) i was about to give up when i read about razzmatazz - a muscadine cross which supposedly does all things for all people.
I'm on the mid atlantic coast so not too cold or hot.
Anyone tried them?
Thanks!