I love the Showcase case, even though it doesn't have a kickstand. But when I bought my most recent one, it had some production "mars" inside the plastic itself (it wasn't on either side, and was multiple blurry spots).
My experience with customer service was horrendous. Seriously tragic. By the time they finally "understood" what I was telling them the problem was (including sending photos that were very very clear), weeks had gone by and my case was so scratched up that I was pretty confident that they'd simply decline the RMA, wasting postage I had to pay for. I finally gave up and started looking for alternatives.
The iSkin case looks nice, although I hate that they require an extender for right-angle headphones. Seems foolish.
The Hunt For The Right iPod Case