What are the pros and cons of the various new aggregators? Which is best?

I keep an eye on several alternative news sites, but not one consistantly. What sets one apart? Which one do you trust the most? Which one makes you think the most? Which one excells at bringing you stories you might not otherwise hear of? I'm sure my list isn't comprehensive, so a few suggestions (4 more, in fact) for the poll part of this is appreciated, too, while I can still edit this topic.

For the purposes of this poll, I'm not talking about journalistic blogs (Carpetbagger, Washington Note, TPM, Bradblog, etc.) that do a little digging, but mostly comment on the news while pursuing their own things. And I'm not considering discussion boards that also collect headlines on the side, such as DU (if I included LBN, it'd win automatically!) or Daily Kos. Just the ones who focus on the news.

What's more trustworthy? Which ones allow themselves to lose objectivity? Who do you $upport? Who do you distrust?

Of your choices, I believe it's the oldest and, IMHO, the best

Very trustworthy and professional in their approach.

...than the others listed and more of a collator of opinions and provocative insights. But it's also so indespensible to the well rounded liberal's bookmark file. I get a little tetchy with them when they prostrate before Ralph Nader. But then again, I don't have to agree with everyone I read.

so that not too much inflation will happen? ie: the middle class

They tell you news you need to know, but if a whale beaches itself in Florida or a beauty pagent winner turns out to have a porno past, they ignore that shit.