I did buy a Quad Core i7 HP with 8gb RAM, bluray, 1gb graphics.. after using it for the full 14 days trial period, I decided to return it. Performance wise it is amazingly fast comparing to any pc I ever came across, installing programs is done in a jiffy. Quality of the screen however, is still not up to par to my white macbook that was 3 years old. Battery is another issue, only lasted me 2.5 hours. That won't even last me a flight from coast to coast, let alone trans pacific flight. And it's big and bulky, although it was exactly $1000 less comparing to a i7 MBP with 8gb RAM.
The Dell is different, it has RBG LED, which is a higher quality LED than the MBP has. And it has an optional battery which offers the same battery life as a MBP doing intensive work. ( The MBP will win doing light stuff because OSX has better power savings compared to Windows )