Finally got my Matte Black Diztronic TPU Case + SGP Screen Protector shipped to me. Amazon took damn long to come through with the screen protector...
Some comparisons with the Nillkin stuff that's easily available here:
Diztronic
- Provides crapload more protection than any Nillkin stuff (raised back + edges + raised front).
- Still the only case I can find anywhere that has proper power/volume button cover. Why leave the power button oily and full of fingerprints?

- Tight fitting. Once you fit it on, it feels pretty much part of the phone
- Good grip.
SGP Screen Protector
- Proper back cutout for camera vs Nillkin screen protector which covers camera
- Feels a lot smoother as compared to Nillkin. Close to naked glass feeling
- No drop in responsiveness vs slight drop for Nillkin
- Front protector doesn't cover as much as Nillkin's front protector, but still enough for screen area.
Also one good stuff to recommend (rooted Nexus 4 only):
Touch Control for Nexus 4
Swipe to wakeup your phone. Eats a bit of battery (honestly, it's pretty negligible to me), but you don't need to press power button anymore, just swipe to wake it up. Paid version gives you a few more options like swipe to sleep. The first app I bought and probably the one app you'll really get a lot of use for - at least 20 to 30 times a day?