teh decipha ? What is that anyway? I still think Bose systems are very nice. I am not into ripping up the stock system only to have some punk steal it. A fancy system in any car invites theft. Being a dealer, I have seen many great cars electrical system and dash butchered by someone who does not know what they are doing. If you do a nice and clean professional installation, which sounds like you can do, I can see that.
PS, try spell check sometime.