Tech21 Impact Mesh rocks!
I'm going to get an iPhone 5s and am having a ridiculously tough time deciding between two cases.
I've narrowed it down to a Tech 21 Impact Mesh case and their Impact Shield or a Speck Candyshell and faceplate.
Anyone have experience with Tech 21 iphone products, or Speck's Candyshell?
I have an iPhone 5, and own CandyShell, CandyShell Grip and Tech21 Impact Mesh cases (yes, I have too many cases

). I got the CandyShell case first--nice case, really liked it, but too slippery. Then I got the CandyShell Grip case, and I was quite pleased with it. It solved the slipperiness problem and felt good on the phone. It was harder to slide in and out of pockets, though, and had only a very small lip protecting the screen. Finally, I got the Tech21 Impact Mesh, and wow! What a case! It is a little wider than the CandyShell case, and a tiny bit longer, but it adds less thickness to the phone, even though the case's lip is higher and more protective. I think that is because the back of the case is thinner, in comparison to the CandyShell. However, as the back of the iPhone 5 is pretty sturdy, I appreciate the fact that Tech21 concentrates its efforts on the sides of the iPhone. This is where the magic D3O gel is located--you can see it as an orange band encircling the case's edge. I have a white iPhone and the blue Impact Mesh case looks quite marvelous with it. The orange D3O strip is visible through the clear blue TPU, but it just adds a high tech, cool dimension to its appearance. As far as fit is concerned, my Impact Mesh fits like a glove and has a premium feel in the hand. It has a perfect amount of grip in the hand--just enough, while still being easy to pull in and out your pocket. The cut-outs are all perfectly positioned. The sleep/wake button is easy to push. The volume up and down buttons are slightly harder to push, but it is no big deal. The case looks great, feels great, and I would imagine that it would protect great as well, although I haven't dropped my phone with this case on it. I am very picky where cases are concerned and this one meets all my criteria. As far as the Impact Shield is concerned, I don't have one on my phone, but my teenage daughter has an Impact Shield on her iPhone 5 and she has been very happy with it. I helped her to install it and the installation was very easy. It is a dry install, which is nice, and we didn't have any problem with bubbles or anything. She has had the case on her phone for about four months and it has been rock solid--no scratches, no peeling edges, nothing. The optical quality is excellent and it feels just like the iPhone's glass screen.
Good luck with your case decision! Hope this was helpful!
Kristin