[ONE Accessories] Reignogleph MMXI:
This review only applies to the clear version of the Tudia case. The design and aesthetic issues might not be as problematic with the black, purple and teal versions. I wrote this review specifically for people who might want to show off the back cover of their OnePlus One -- especially the sandstone cover and the upcoming bamboo accessory cover.

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Forget the fact that clear cases often turn yellow over time. Even if you don't mind that phenomenon, here's what's wrong with the clear version of Tudia's "Ultra Slim LITE TPU Bumper":

1. The transparent part of the case is exactly where you don't want it: at the top, bottom and corners. This highlights the silver band of the OnePlus One -- the part of the phone that many of us would prefer to conceal.

2. The frosted part of the case is exactly where you don't need it: on the middle, largest and widest area, which obscures the sandstone and custom back covers you might have have wanted to show off. The only reason I wanted a transparent case was to feature the back cover. This case doesn't do that.

If you look at the pictures of the clear case on the Amazon product page, you'll see it's obvious that Tudia never double-checked their design of the prototype with a physically real OnePlus One. None of the details and color of the back of the OPO appear in their graphics of the apparently minimalist design, nor do the stripes of color variation when the cover's used for the black OPO (which is the only version that OnePlus is shipping currently).

3. It makes a 2014 device look like a 1999 Powermac G4. Remember the days when every computer and accessory was ambered in see-through plastic? The transparent plastic at the corners and edges of the case create that same effect.

4. The details of the design conflict with those of the half-exposed OPO, both highlighting and obscuring logos and lines of text. Additionally, the Tudia logo runs sideways vertically beside the horizontal Cyanogen text and logo, which makes the back of your new minimalist phone look like a complicated double exposure.

5. The division between the clear and frosted portions of the case are accentuated by a line of thinner transparent plastic, which segments the OPO into three sections that make it look even more '90s-clunky.

The transparent Tudia case definitely adds more protection than the official hard-shell I bought from OnePlus (since it shipped with my phone). The cutouts all align and the buttons are decent but not great.

However, the official case looks far, far better. In users' pictures, the Diztronic looks better as well. (After I receive my Diztronic, I'll let you know what I think.)

So to sum:

Even if you like transparent cases and don't mind their yellowing over time, avoid the Tudia case. It has other problems and is far less attractive than the Diztronic.

This would have been the better choice for the OnePlus One design-wise: Frosted plastic for the corners and edges, and transparent plastic for the back. But here's why that might not work: The transparent color seems only to be available in a smoother and harder plastic. To make that kind of plastic work for the back of the OnePlus One, it would have to have a molded texture that was grippy enough to hold onto but clear enough to show the back cover of the OPO. The deciding factor would be the difficulty of developing a texture with traction with a plastic that is transparent -- especially on a budget.

(I'll try to add pictures to this review over the weekend, when I'll have access to a camera that isn't part of the OPO in the case I need to photograph.)