I've also been using repashy calcium plus and am continuing to do so with our 2 pet only leos. My newest guy is used to the vionate/osteoform mix so I'm keeping him on that combo. So I guess it depends on wich leo lol. Repashy is nice and simple though, just dust lightly at every feeding! I remember your post very simular to this awhile back somewhere, what did you decide on?