I have both trees, but no fruit yet on the Wekiwa. I have another variety that I think tastes better, its the Melogold. It tastes much better than the OroBlanco and is an improvement in flavor (at least for my taste, very sweet).
Both OroBlanco and Melogold trees fruit heavily so you will have lots of fruits to eat. One year when I didn't trim back the OroBlanco tree, on a large branch had 110 fruits, just before the fruits got ripe, the entire branch (2" diameter) broke off. Here's a photo of another grapefruit I like, its called Cocktail grapefruit (mandalo). This tree has lots of fruit as well, I did take a photo of the 32 fruits on one branch of this one.