As someone who's made an adapter for my factory stalk, I'd say that I'm very happy with it. I get the facilities I'm used to from the factory stereo (volume up/down being the essential one), and while I'm aware that the Sony stalk has more functions, you don't miss what you never had .

BTW, if Sven's reading this, do you want to add some of the stuff I posted to another thread here regarding stalk interface to the write-up on your site and at riocar.org?

Ah, I've just looked, and it has been updated since I last checked. Never mind, except that the image could do with updating to show the shift input, and its URL on ricar.org needs fixing (the space characters in the URL need to be %20).