I was in an electronics store recently, looking at all Apple laptops. Out of all the ones that I tested, the 13" rMBP speakers sounded the best. The 15" sounded good as well but the 13" speakers definitely were louder, wider sound stage, better. Has anyone else experienced this? I was surprised because the 15" has the speaker grills. It could have been defective but it's unlikely. I'm also wondering if last years 13" rMBP has the same speakers or if they improved them even more with this years model.