I've seen three types of cat tooth-brushes. Which works the best for you?

1) Finger-stall type: slides over the (human) finger. -- My kids DO NOT like this one

2) Mini-brush/mini-head: q-tip sized brush with mini-head -- So far the best luck getting the kids to lick the paste and almost touching the teeth with this one.

3) Regular toothbrush handle/mini-head: Easiest for me to hold; Cassy likes playing with this one, carries it around the house (hardest to find when I need it, ironically)

Which size works the best for you?