I'm looking for a new laptop. At the moment, I've fallen for the Sony Vaio Z series. Nothing appears to come close to it with regard to power, and it also appears to be able hold its charge reasonably well. Is there anything out there that can compete with the power, style and efficiency of this machine without costing any more?

Also, I have a Dell XPS M1530 that I now need to get rid of. What's the going rate for one?