Engadget are Apple fanboys, Anand is pretty much fair and unbiased. Engadget basically subtracts points on every non-Apple product review, simply because it's not an Apple product.
Anand pretty much reviews only Mac laptops and the iPhone (with the occasional odd Apple product review), and does so fairly in relation to other laptops and smart phones. I haven't really seen a Mac workstation or desktop review in ages on Anandtech, probably because they're outrageously priced compared to PCs. I'd think if Anand was an apple fanboy he'd review every Apple desktop or workstation too.
Doesn't anand use some self assembled PC's anyway? Keep in mind he travels a lot, so that means he has to use a laptop an awful lot.
Apple makes some of the best laptops around with amazing battery life, why shouldn't a hardware tech site review them (and even give positive reviews?) and possible write with them.
If I could afford it, I would so rather have a 13" macbook than my $250 Eee PC netbook.