Hey Dale,
I'm not sure if your area gets as wet as Virginia? Here we need to grow pure labruscas like Concord or the hybrids which I prefer like Rich mentioned for disease resistance if there's to be any hope of organic growing.
I tested out Ladyfinger (pure vinifera), Jupiter, Villard Blanc, America. Only Jupiter remains from that bunch and he could be out the door soon too.
I recently added Swenson Red and will be adding some new U Ark releases this spring. I think the Swenson Red although seeded and the U Ark new ones will be my winners in the long run. Canadice and I also heard good reports of Glenora would be others to keep in mind.
A lot of these grapes when ripened well the actual flavor inside is great. The more important fruit quality factors I look for in hybrid table grapes are, in order of importance to me personally: skin thickness/toughness, amount of labrusca flavor, productivity/plant performance, and then finally seeds. I think everything I listed is seedless though except Swenson.