My trees are still babies, so take that into account...but here are my thoughts:
I would encourage you to go to your local farmer's market about once a month for a year, even if the food there is not in the price range that you typically buy, and pick up a few pieces of fruit that you haven't tried before. I think that I might have tried slightly different varieties or types of fruit (such as more evergreen fruit trees) after trying different locally grown fruits.
In hindsight, I also should have checked the exact recommended chill hours from multiple sources, rather than relying on the nursery to tell me which trees were "low-chill".
I did intentionally plant some fruits that are more expensive to try to save on groceries. If I was to do it again, I might focus only on the higher priced fruit. What I realized was that price in the grocery store has practically no correlation to ease of growing in my climate zone. For example, if I tried to grow apples I would have only a couple of low-chill varieties to choose from, and they need a significant amount of water. In contrast, I bought a box of pomegranates for my family at Costco and realized I could buy a drought friendly, bare root pomegranate tree for about the same price. Don't rule out any type of fruit till you do a little research.
I planted one nut tree that is not ideal for this climate, but that if it works out it will provide nuts that that will not need complicated harvesting or processing. That is one thing I definitely don't regret--planting only fruiting trees where the fruit can be eaten straight off the tree, and keeping them pruned small. Life has gotten busier since I planted them, and it's nice to be able to go out and enjoy doing tree stuff when I have time, rather than feeling stressed about what the trees need done.