Looking for good 3 tree combos for getting Avocados all year as well as oranges (or citrus).

I've read several avocado suggestions along these lines over the last few months but I'm having a hard time finding them again. One for avos was: Pinkerton, Hass, Sharwil

For citrus there are some handy charts available to figure that out, but if anyone has the best tasting combo, I'd like to hear.

Thanks in advance.