Sunny With a Chance of Techno

I was searching soundcloud.com for potential background music for my clip and came across a number of tunes I would consider using. I am still tossing up whether or not to use a more futuristic/techno style piece or to go with a more subtle acoustic one.

This one, as cool as it is, is a bit intense for what I want but the electronic style is similar to what I'm looking for.
http://soundcloud.com/noisia/noisia-alpha-centauri
Something a bit more like the later half of this is more like it;
http://soundcloud.com/forekast/ludovico
As far as acoustic ones go the first is probably my favourite for subtlety but the second is more lively. I would have to check both against my clip to see which suits best and within that find which 30 - 40 seconds are best.
http://soundcloud.com/philipraivander/background-music
http://soundcloud.com/philipraivander/background-music-2