iPhone 6 Plus. I'm not a member of the Cult of Apple, by any means (I shudder at the thought of using Mac OS because I'm so used to Windows), but I don't get all the iOS hatred. I've had four iPhones and take sh[inks] every time I get one from some because I can't install non-approved apps or some other fanboy BS.
Is it OK that I just have and stick with a phone that I like and works for me?
Not at all. But going in the other direction toward iOS if you're used to another phone can be pretty difficult. iOS 8 fixed a lot of my biggest complaints about it though, especially that iCloud's photo backup system used to be terrible.