Just based on what you and tops2 said that you prefer the zoogue over the Magpul because it's slimmer and has more grip. I was hoping I would like Magpul more than zoogue. I really just want something like my candyshell grip but slimmer and a more rugged look.
I got the CandyShell Grip, the Zoogue, then the Magpul in this order.
CandyShell Grip is an awesome case that's super sturdy and unreal grip. When I first switched away from this case, all other cases feels so flimsy and have no grip. Main reasons I stopped using it though is the size... And the double edge sword of the grip is it grips everything including my pants or workout shorts pockets.
Used the Zoogue next and actually didn't like it that much at first. Over time it really grew on me. It's mainly that it's slim enough but provides some protection. I have one of those cheap paper thin ebay cases and wanted something with a bit more protection. While it has less grip than the CandyShell, it's still pretty decent. The ribs really help in my hands for the way I hold the phone. It's slim enough that I can use the phone one handed reasonably well.
I'm a bit conflicted with my Magpul. Size is almost the same as the CandyShell. It feel much more protective than the Zoogue. But the main drawback for me is mine feels like there's not much grip. Even though mine is textured, it's still pretty slippery. The ribs surprisingly to me doesn't help at all. The size combined with the slippers makes it hard to use one handed to me.
For the past 1 or 2 weeks, I went back to the Zoogue and love it again.