One of the most fun games I have played so far! :D
I think that it is very polished, with a nice looking menu and background, and difficulty that feels just right. I also liked the variety in the levels, such as the meteors, enemy ships and lasers.
One small improvement could be to add particles behind the ship and in the background, to make it feel even more like you are traveling fast (which is does right now also because of the parallax background).