Wait till august for the Core 2 Duo AKA Conroe AKA Merom cpus come out for laptops, they will be BLAZING fast compared to anything on the market, and if you're spending $3500 on laptop you should have no problem affording a top merom cpu in your notebook.
dx10 is great and all, but its for the people who can wait. if you really need a laptop soon just wait untill august (i hope you can wait that long), you wont regret it.
too bad dell doesnt offer hd-dvd or blu-ray in their notebooks.