My problem with Amino is that it seems like it's basically a shell for the Synbiota kits (synbiota.com). I met someone in Toronto a few weeks back who knows the Synbiota guys, and he said the founder of Amino and Synbiota are dating.
Which is fine, but maybe they should be open about that partnership. The Synbiota kits are kind of cool, but the Rainbow Factory kit didn't work for me as promised and they are seriously expensive.