Well I thought I'd just redo the entire image, and the render time was far less than before. It took 45minutes to render this image at 1280x800 with about 80% overall quality. Can't figure it out why this image rendered faster even with better quality settings although the image is basicly the same, apart from the plane, but it didn't realy add that much time to the render proccess.

Now I must again return to the quality issue. I set the texture smoothing to ~80%, antialiasing, the clouds where best quality .. but it looks unrealistic once again. compared to the images on the official Vue webpage it looks like garbage. Is there ANY possible way to make the quality picture perfect? I mean 80% overall quality is pretty high I think, but just take a look at the image in full size..