Tried it in GAME today, screen is massive and very striking in person.
- Colours are exactly the same, they aren't more vivid.
- Face buttons are the same, so is the Circle Pad.
- L and R feel nicer and more satisfying on the XL.
- 3D is no different to before, same effect exactly.
- Didn't like the new Start/Home/Select buttons, they don't feel good.
- I definitely noticed the image looked worse on the XL while playing Mario 3DS (more in your face jaggies), not enough to be a turn off, but it will be for some people (my girlfriend felt the resolution suffered more than I did).
- Top half (not the screen) looks cheap for some reason, but the lack of fingerprints is a very good thing.
Overall, sticking with my original for the time being.