Kensington Pride is a vigorous polyembrionic variety that could be tried, is has a very nice distinctive flavor, it does have a small amount of fiber. This variety is used a lot in breeding here in Australia to incorporate some of its flavor to the progeny as it is so familiar to the locals. R2E2 is a very popular variety which is a cross of KP and Kent for memory, it is a very large fruit with little fiber. Being a cross of a monoembrionic and a polyembrionic parent about half of the fruit contain a polyembionic seed, so these seed, can also be tried. Banana-1 is another Australian polyembionic selection that could be tried as well as one called Strawberry, I am happy send seed of all these if required as long as you arrange your own import permits. There are two more polyembrionic varieties that could be tried that are available in the US, one is Nam Doc Mai and the other is Early Gold, this last one is said to have moderate/high anthracnose tolerance.