Cons for grips: the slots in each group handle in which the phone sits is large (presumably to accommodate a variety of phone thicknesses), however there is enough of a gap between my phone and the grip molding that the tension of the plastic bar connecting the two grips pulls the grips at an odd angle from the back (think of it like over-tightening a bra-strap in the back)

Pros for grips: easy to assemble, the pass-thru hole on the right side easily accommodates a power cord, feels good in my hands, spring tension on the plastic bar connecting the two grips is reasonably strong

It has a good grip and my phones doesn't slip whenever I'm playing