I have the original red one. I've been debating whether or not to get an XL (since games look so much better on that big screen), but I haven't reached a final decision yet.
I owned a white DS Lite once. If the 3DS is in any way similar to it, then it shouldn't get too dirty. Maybe a smudge here and there. It all really depends on how well you treat it.
I wish I had a New 3DS, but I love my old one so much. It's the original 2011 Aqua Blue version which was bought at launch at a great selection of two colors (black and blue). I was like "Man, if they only carried purple or pink", one of which they came out with quite promptly afterwards. :>
3DS is so awesome. I am so happy I have one~
The original, sparkly blue 3DS. Don't need or even want any of the others. They just don't do anything I need, as has been the case with all of Nintendo's handheld redesigns after the GBA SP.
I have three 3ds xl, the Pink, Year of lungi and the animal crossing and two new 3ds xl, one red and one black. I also have the nes 3ds xl, yoshi 3ds xl and the new Zelda 3ds xl but don't play them as they currently are still unopened.