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For the first concept, I like the header. It is nicely done, the only thing I would change is the 'information in realtime etc,' heading because it does not stand out from the background. Titles are usually there to attract attention. The typography you used in the second concept is a lot better. I also think that the 'start here' box's reflection could be change so it is done in the same style as the laptop's reflection.
The 'products & prices' button should probably be moved so that it is under the paragraph and text. Where it is right now is quite awkward, as it is not aligned to the grid and appears to have no relationship to anything else on the page.
Other than that, it is a very nice website, the bright colours makes it lively and enticing.
