#1 We like the more abstract 3D version of the cloud here. I'm not a fan of orange and blue, but like the clean, techy - but not too techy - font. The blue and grey look nice together, so those colors would work - with the introduction of a new 3rd color to replace the orange to jazz it up a bit.
I'm still looking for something more eyecatching with more pizzazz and that makes more of a bold statement, but great first shot.