I use this shell for 2 weeks. Here is - also in view of the low price - really nothing to complain about! The fit is just right: not too tight (could easily be "put") nor too far (no wobbling). The material is smooth and you can see, unfortunately, repeatedly fingerprints, but these and other dirt can be wiped off well due to the smooth surface. The case protects the device at edges and back reliably and also ensures that there is good grip. The cut-outs (camera, two microphones, USB, Aux, speakers, docking, volume rocker, power button) are made cleanly and exactly in the right place. By Cover the unit is on all sides about 1 mm larger.
One small concern, I do not, however, can accurately assess: Possibly is the battery life affected by the back of the phone is less well ventilated / cooled as without shell. With heavy use it gets back yes generally slightly warm. That with the battery life but I can not say for sure - therefore there's also no penalty.
