Can someone explain the differences between these 2 radios? I can't seem to find any tech info comparing the 2. I know the head units are vastly different and the 430 does all sorts of fancy stuff, but is the amplification and sound better on the 430 vs the 130? Factory speakers different between the 2 radios. Trying to make my decision when ordering. I like music but not into it as much as some of you guys (ok, im old!)