I'm only a sophomore, so I'm just now starting to try to figure out what direction I want to go in within CS. So the abroad experience would really be to experience teachings of computer science in a different fashion than is custom here. Whether that will actually happen... No idea.
Well, I know from personal experience the universities in the Netherlands are pretty decent when it comes to CS. Added bonus is that practically everybody can speak English (and don't mind doing so).
I'm a msc-student in Groningen. I hear the CS programmes at Delft, Utrecht and Twente are nice as well. The cultures/approaches are all different though, have a look at their websites and see if anything resonates with you.
