Laptops aren't renowned for their sound qualities. However, I think that regardless of manufacturer, integrated sound has caught on everywhere. Have a look at the laptops below. If you cannot find anything that suits your audio needs, may be think about taking a look at this article: http://www.tested.com/news/integrated-vs-dedicated-sound-cards-whats-the-real-difference/569/
Something like that should take care of your all around needs as well.