I think only the OG model had the screen scratching issue, I don't think the XL, N3DS or N3DS XL have it since the bottom screen doesn't have a frame that sticks out so much. The battery life is a bit better, but then I was still using my launch unit until some weeks ago when Nintendo decided we lowly people of NA could buy the non XL N3DS
(I had to buy it from Amazon US, though, Mexican stores are only selling the XL).
The stick is actually pretty nice, it works great in MonHun and Code Name GOTY. It's also great in SSB. Plus the OS is faster, and SSB doesn't take ages to boot. I'm very happy with my upgrade, I just wish it was just as small as the OG 3DS :[ But I'm weird like that, I still own and love a GBA Micro.
That one looks so good! The Kirby one is not textured, it feels flat like the Animal Crossing ones.
One day I'll find the Boo ones that glow in the dark at a decent price! Maybe. Hopefully.