If the weather wasn't as good as it is here in So Cal I'd go for the WRX in a heartbeat. (Ironically it's raining right now)
If on the off chance something happens where I absolutely need 4 doors or a big hatch, I'll get a WRX.
The gas mileage, seating position and shifter turn me off, plus the base WRX doesn't have HIDs. Otherwise if you want power and a great aftermarket and need the space like Tyler says, than it's a no brainer.
Although if you can find a Mustang GT for that price...
Honestly there aren't any cars like the BRZ, except for the Miata, and maybe an S2000 but they are too much of a compromise. I'd wait for the BRZ unless you absolutely need a car right now.