Based on your praise of this case I bought one of the clear, transparent models. I've had it a week and I really like it. Very minimalist. The somewhat soft material is definitely grippy. It's much smaller than my previous case. Even after a week, when I pull my phone out of my pocket I'm amazed at how much smaller it is than my old case, and I like that. Doesn't take up as much room in my pocket. The screen looks bigger on this case.
One possible negative (I think you mentioned it) was the plastic might develop a slight yellowish tint. If that happens and I don't like it, I'll probably buy another one of these, but in smoke black in color.