I don't have QW yet, I am waffling on getting it this week, but could not do so tonight since i had other chores to do.
The TF2 thing is one thing-I generally don't play a ton of online FPS games, and spend most of my online time in RTS games instead, so TF2 would probably fit the billl nicely.
The other BIG thing is that there is supposedly going to be a public (read: for everyone, not just fileplanet folk) beta drop of UT3 tomorrow. Given the choice of Quake Wars, TF2 you've already paid for, or UT3, even in beta form, it's hard to justify QW unless you know you're going to love it.