Its possible to have way too many options on a deck. I had a pioneer that required adjustments everytime I changed radio stations or cds. Now I just listen to news talk radio and haven't boughtered to replace the OEM deck. how gay is that.
...but what if the money that company A spends on putting in more features, company B spends on the quality of what IS there.
Not saying that always happens, but it certainly could explain why a 9255, for example, costs more than a $200 pioneer(or alpine, clarion, eclipse, etc).