I grow "Golden Zucchini," an OP variety, every year; I wish more of the seed companies carried this one, I've had better luck with it than with any of several hybrid yellow zucchini that I've tried (I prefer the yellow types largely because they're so much easier to find while still small!)
I've grown tromboncino in the past and also used it for "mock apple pie filling" - the round slices that you get from the neck are perfect for imitation apple slices!
