Originally Posted by
moondog
I would go with the taxi since the cost is comparable (with 4 people), the transfer is annoying, and the ring line is crowded. You'll definitely get to experience some traffic, but you'll survive.
OK, I like taxis.

Especially in China, where they're dirt-cheap. As long as it's not gridlock, I'll be happy enough.
And no reason to use a car service from the airport? The first time, I landed at PEK, somebody arranged a driver for me and it seemed more trouble than it was worth.