I'm still glad Frank is offering magnesium glycinate even in this form, but the liquid was much better for my family.
A dropper full of liquid was much easier to give to my young toddler rather than a pill. I must now break open the capsule and mix the powder with other things. I must do this for my dogs now, as well. My older kids do okay with the pill, but they actually liked the taste of the liquid - even my picky, young toddler. (Note: they do not get high nor frequent doses, don't worry.)
I'm very sensitive to foods and having one less variable, i.e. the capsule, to potentially attribute physiological phenomena to is better. I will continue to buy the capsules and I'd continue to recommend them to others, but I would switch back to the liquid if it became available again.