I purchased a Dell Inspiron 9400 5 months ago and have no complaints yet. It was listed on sale for $975 to my door, but in the end it cost me less than $775. I happened to see a similar model a month later with more memory, so I contacted Dell and suggested they provide more memory or give me credit. They not only sent me more memory, but they also credited me $200. I was only expecting one or the other, so they have my vote.
Dell was in the news recently about giving up on rebates and simply advertising/selling for less. No doubt another good idea as we all hate those rebate hassles.
Here's a url for Dell and other deals. Sometimes coupon codes are provided. Hopefully the link will work without having to register to the home theater forum it resides on.
http://www.hometheaterforum.com/deals/deals.php