kulsa, I have the normal green leaf Sanbokan grafted on my Bearss Lime tree and it is a vigorous variety. It always gets large fruits hanging in bunches up to 2-3 and weighs a lot for the size of the branch (grafted). Also, if you use Sanbokan as a rootstock, it works very well for other varieties that might be slow/hard to graft.
Yes, I feel the same now, I use to have all of the variegated citrus in my collection, but the uniqueness is gone. I prefer to have an excellent tasting fruit instead. The best variegated citrus I had/have is the variegated Buddha's hand, the fruits are also variegated but the graft really doesn't grow much (weak) so I'm not to happy with it. I prefer my variegated Valencia orange since it grows strong, has tons of fruits and keeps fruiting most of the year. I still have lots of ripe fruits now on my tree.