MU. Like any good theme, it’s expansive, with enough icons (for stock and 3rd party apps), UI graphics and Cydia add-ons to completely change the look of your device.
As far as how Motif looks, I find myself torn. I really like the darker (brown?) UI elements, and some of the icons. But I have to say, there’s also a lot of stuff I don’t like. For instance, I’m not fond of the signal bars in the Status bar (they look way out of place), and I could do without the brown and gold Dial pad. I also dislike how the toggles look, and some of the icons are hard to identify.
But that's doesn't mean that the theme is bad.. If you are interested in Motif theme, you can find it in Cydia, in the ZodTTD & MacCiti repo, for $4.