I love my 3.2 Q4 sv, I've had her for 14 months now and apart from the flywheel going knackered after a couple of weeks (she had done 60,000 miles when i picked her up and the trader I bought her from paid most of the cost for a new clutch and flywheel), my Bella hasn't put a foot wrong since!
I've changed the brakes to Mtec discs with Mintex pads and put HEL braided hoses on her, but that was purely through choice, not neccesity.
My brera is my daily driver, and i've put 13,500/14,000 miles on her, other than a service (service intervals around 18,000miles!) and the odd fluid top up/bulb, I've not had to put any money into her.
I had some paint work sorted this week on the front wheel arches due to stonechip damage, again, this was mainly through choice.
The Q4 system is great, really stable in poor weather, but also great fun when you do decide to be heavy with your right foot.
Sadly, I will be putting her up for sale in the next week or so (you can have first dibs if you like
), as buying my first home is more important than driving a flash car at the moment. But I swear I WILL own another brera Q4 in the future!