Hello - I am currently updating my 2008 Chevy Silverado extended cab truck with a Pioneer AVIC-X930BT navigation ready HU. This is an extra vehicle, so
I only want to replace the 4 stock 6.5" speakers (w/2 separate tweeters on the windshield posts). I'm not planning any separate amp or sub. I've been looking at MM6501 and DB6501. The sales guy at Fry's said that unless I had an amp, the DB's would sound virtually as good as the MM's. He said the MM's needed an amp to really stand out. I realize he's trying to save me money, but I don't mind spending a few extra bucks if there would be a noticeable improvement with the MM's. Even with only a HU in the store, the MM's seemed to sound a little better, but I don't know how that will translate inside my truck. What do you think?