Rita, You have grown some zukes that I have not tried yet. You might want to chip in on their taste and productivity. I only get to trial about two a year as I concentrate on crooknecks and scallops. Some do well others fail in one category or the other. Adora for example, beautiful and tastes ok, but poor production.
Prolific was even less productive than Black Beauty for me.
One of my favorites is Grey Griller, sort of a combination of a round and cylindrical zuke.
I love the appearance of the striped zuke but have not had good production from the few varieties that I have tried.