My opinionThe xps gen 2 runs hotter and costs more than the 9300 and the Ultra card in the xps doesnt offer a significant performance boost to justify the extra power and heat and loss of battery life or cost for that matter, especially when you can overclock your 9300 to near Ultra performance.
Im a gamer and bought the 9300 as I dont game on my laptop anyways, its much more comfortable to game on my desktop.
While the XPS2 is a sharp system, I couldnt justify the extra cost as it cannot compete with the 9300 for value and performance in an otherwise identical notebook.
Just my thoughts, whatever you decide, Im sure you'll be happy but If I were you I would keep the 9300 and invest that money you plan on spending for another notebook that you really dont need and put that money into a desktop.
I dont belong to the camp of people who think that a notebook can replace a desktop. Having a desktop and a notebook is a far better solution than having two notebooks. If you monitor goes out on a desktop, you just buy another one, if the monitor on your laptop goes out? It's almost a total loss for what you pay for a new lcd panel. Parts for desktops are not proprietary while notebook parts are so basically with sound and video, youre stuck in a notebook with what the manufacturer decides to offer. Remember that the notebook manufacturers idea of an upgrade is usually buying another notebook. I guess a good analogy to my thoughts on having a notebook and a desktop are much the same as having a Jetfigher and an aircraft carrier.
How useful is that jetfighter without the carrier???