I'm interested in planting table grapes. This will be my first time. I am trying to choose the best variety for my situation. I'm looking for a seedless variety, resistant to powdery mildew, I would prefer red grapes, purple would be my second choice(for the health benefits). I would prefer a type with more of a sweet, less of a spicy flavor. I would like a variety which is vigorous. Of course we get plenty of rain here for most of the year. The location has full sun but our soil has too much clay although I will attempt to improve it before planting. I would greatly appreciate any advice on making the best selection. Thanks so much!Jen