Personally, that cube logo font is too thin and italic for me. I don't think it needs to be slanted, as, afterall, cubes have no slopes in them? They're perfectly straight and I think a font that replicated that would be a lot more effective.
I like the 3 communication though, that's working for me.
As for the strapline, again, it's the font, too thin and weedy to print at the size you're looking at there. I'd make it bigger and a more legible font, thin doesn't strike me as 'logo creative'.