Got the Rearth case in the mail yesterday and I like it alot. It really is pretty slim and adds no noticeable bulk or girth to the device. Plus I really like the fact that it leaves the power and volume buttons exposed. With the Boxwave Unicolor case it covered the buttons and it was really hard to interact with them. I had to use a lot of pressure in order to press them. Plus like I said earlier the Unicolor case added too much bulk to the device.
But I'm really impressed with the slimness of the rearth case so far. Plus it has little tabs that cover the headphone and mini-usb ports so no lint or anything will get stuck in there. This is exactly what I was looking for. I can now finally put an end to the "great white buffalo case hunt" LOL.