Newegg doesn't let you return a TV with dead pixels unless there are more than 6 on the screen. That's why I would avoid them. I actually prefer big box stores for this. Their prices have come down quite a bit and, using coupons and hot deals, they come close to some online store prices.
Costco.com is good since you can take back to the store if there is an issue for 90 days and you get a 2 year warranty.