I just order seeds of two yellow summer squashes ( Early Summer Crookneck and Summerpac Hybrid). But as far as zucchini, I went for one I have had before called Poquito. It looks like a mini watermelon. And then I got Bossa Nova which is a Caserta type. Love Casertas!!
As far as production, I really don't know. I plant a lot of plants and I am always picking squash so I always have squashes. I don't pay that much attention to which is more productive or not as I always have squashes to pick. Plenty for me to gicve away and eat.
