Blackberry Passport (previously Q10) user here. BB10 is not a "minimal phone OS". Maybe this was true for older BBOS phones (don't know, never used one), but BB10 converted me from being a longtime Android user, and I've yet to feel like I'm missing out on anything (it does run Android apps too).

Also, Blackberry sells the Classic unlocked in the US through it's online store[1] and Amazon[2] and you can also get one on contract through US Mobile[3].

[1] http://shop.blackberry.com/store/bbrryus/en_US/pd/productID.... [2] http://www.amazon.com/dp/product/B00OYZZ3VS/?_encoding=UTF8&... [3] https://www.gousmobile.com/blackberry-classic