I have the opportunity to trade my 3DS with an xbox with Kinect or sell it for 130 euros.

What should I do?

Just buy another PS3 or Vita. You know you want to turkish.

Real answer = go for the 360, play some exclusives, most will be cheap now.

defentley Xbox 360! Halo 4 all the way baby!

I'd take the money if you're determined to get rid. Given how we're not too far away from a new console announcement from Microsoft.

If you really want a 360, sell it for the money and get a 360 when the holiday hits.

If you don't really want a 360, just sell the 3ds and use the money for something else fun.

else if you don't really know, toss a coin.

Get a 360, play the exclusives and have fun! You should get to play every console and its games if you have the ability.

Do it, Jump in.

you're going to get much more variety by keeping the 3DS since you own a PS3, you own the chance at 90% of the 360's library, and lose the 3DS library which is a good 50-60% wholly unique.