Glad this is here, really seems like a lot of people are struggling to choose between these two. I'm actually debating between the Mimi and the Zini Ran for a clitoral vibe. I like the idea of using a dildo or g-spot type vibe for clitoral so it's less in the way during partner use (my hand won't hit him during missionary, etc, since it'll probably be up by stomach instead of vulva)
I love the design of the Zini, but it's really weak. OTOH, the Mimi really frustrates me because of the hard-to-press buttons and the big, broad surface. My favorite is still the We-Vibe Touch, and the new Leaf Life is really nice too.