Coinkite is a really good company. Open Source soft AND hardware. The bitcoin-only thing might mean something in terms of attack surface. Even over the one where you only download the Bitcoin app.

Also, if anyone is shopping around, hardware devices are a thing you should possibly see if you can buy at a conference or meetup. Or at least use a PO box; don't let bad actors know where your house is. (I hope 3 companies don't know where you live, OP.). If buying online, also consider buying with a prepaid Visa Gift card or something like that.