I went to the Subaru dealership on a whim a few weeks ago to test drive a BRZ. I wasn't planning on buying one—at the time I had a 98 Impreza wagon with suspension upgrades, WRX wheels that I daily drove in addition to a 2011 WRX w/ lots of mods, making 305whp, 330wtq. Before I knew what was happening I was signing paperwork to purchase the BRZ. I sold the 98 Impreza, and I am keeping the WRX.
If I told 18 year old me (driving an 88 Chevy Celebrity) that I'd have a WRX and a BRZ when I was 30 I probably wouldn't have believed it, hah.
I have to say, aside from power (and the ability to romp through the snow without any concern), the BRZ is much better than the WRX in almost every aspect. I absolutely love it.
The only thing I have changed so far is the wheels. I'm currently running 18x8 et45, Enkei RPF1's with Michelin Pilot Sport PS2's in 235/40.
The day I got it:
...and here's my WRX:
...my old wagon:
...and my first Subaru that started the obsession: