Last month's Laptop magazine had a review on the NP8882. Sager also do a bit of advertising in the computer shopper magazine.
I'm not too sure what you mean by 3rd party, since I would consider anandtech and techtv, etc to be 3rd party. Also, no one is paying any of us (at least not me) to review the sagers on this forum, so that's as unbiased as you are going to get. And what gsferrari said about critical posts not getting deleted or edited is true. I have bitch a couple times about the dead pixel on my screen, and my posts are still there.
By the way, CNET reviews are 'influenced' by the companies that do heavy advertising with them.
Maybe if you have some specific concerns or questions about the sagers, I'm sure the poeple on this forum can try to answer them for you.
As for me, the only regret I have is getting my 5660 a month too early. Now they have the new high contrast screen!!!!
In addition, Alienware, Sager, Prostar, Hypersonic, and a couple of others are all made by Clevo (someone please correct me if I'm wrong). So for equivalent models, the insides are the same.