I have the Ringke Fusion clear case for the XR and it's a solid case.
The Fusion is thick enough to feel like it can take modest drops, but thin enough to not feel bulky. It's has okay grip for my dry hands as the sides are a bit rubbery. When my hands is wet, then the sides are slick. The buttons are pretty responsive. The backside corners are raised. I actually just noticed today that toward the top and bottom lips are slightly higher than the middle lips (kinda like the Mous Limitless 2.0). I have a generic tempered glass on my XR and Fusion's lips are still raised high enough above the glass. Only time will tell if the case yellows, but I got it for a real good price a few weeks ago when I saw it on Slickdeals.
All in all, the Ringke Fusion feels like a solid case with no real weakness that I can currently think of. I wouldn't mind if the sides have more texture to improve the grip, but this is something I want for all cases..
I should be satisfied with this case..but since I'm in this sub forum, I'm browsing through what others have..
I've used Spigen cases for years. But I was torn between the Ultra Hybrid and the Ringke Fusion. My deciding factors were....
-Wasn't a fan of the corner tabs on the Fusion
-I didn't want clear or transparent sides of any kind. They look cheesy IMO. No offense to those that like them. Not my thing
-I know Spigen quality. Never owned a Ringke
With that said I'm perfectly happy with the Ultra Hybrid. Sides have just enough grip without being tacky. So far the clear back had held up pretty good. Only one small light scratch. Good thing it's hard to see on a white phone.