I've worked on an embedded user interface according to a spec by frog. It was great fun because, among other things, the UI described by the spec was nice and g

I've worked on an embedded user interface according to a spec by frog. It was great fun because, among other things, the UI described by the spec was nice and good looking, and the spec left no important open questions. The customer paid for frog so I don't know how much it cost, but probably a whole lot. Anyway, if somebody asks for high quality UX/UI design, I recommend frog.