I bought a 3DS (original, black) months after buying my Vita. I found myself not playing with it as much, despite getting it after my Vita. (I like my Vita so much more. No idea why it's bashed all the time. Guess it's just ignorance...?)
Anyway, once the XL came out, I've decided to take the upgrade and trade in my old 3DS...
I had the choice between Black/Red XL and Black/Blue XL, and I've chosen Red. It was a rough choice, it really was! Hahaha! I almost chose Blue. I kind of regret it - but I guess that's just because of the fact that I don't own the blue one, and it'd be considered different to me haha!