High end and Dell do not belong in the same sentence. Not to say that Dell's best stuff is complete garbage or anything, but I definitely wouldn't call it high end.
I'm not a laptop user though, really don't have a clue when it comes to laptops. For desktops though, no one will ever beat you selecting your own components and building yourself.
If you go with Dell, HP, or any other "off-the-shelft" prebuilt unit, you are getting inferior components to what you can get for cheaper yourself. Though, I'm not sure if you can self-build laptops like you can desktops.
I also have a discount with Dell. My work supplies packaging for Dell. My discount is that I pay $30 MORE than you can purchase straight off their website. Yes, I said MORE for a discount. Wonderful discount. Found that out when I was purchasing my computer 3 years ago. Instead of either buying the Dell for ~$900, or ~$930 using my discount code, I bought a Compaq at Best Buy with more and better specifications than the Dell for ~$500.
Dell can kiss my you-know-what with their false marketing claims of being the cheapest and #1 customer satisfaction ratings.