PNW Stereo/audio installation pro for Prius: recommend?

Anyone have recommendations (for or against) stereo equipment installation pros? Specifically for a Prius, but I'll take some who know modern Toyotas.

I'm really thinking about putting an AUX-BOX into my Prius; but I'd rather not do it myself -- I'd prefer a pro does it. I can get the parts myself; just want someone to install it.

While the Seattle area is preferable, I don't mind driving as far away as Portland to get it done right.

Any information is appreciated. Thanks in advance!