Speakers today are much different than the used to be. It's as if they have a built-in loud button. I think it was MBQ that was the 1st to start really pushing high Q mids back when they took the market by storm. Today's equivalent would be Focal as they have some boom to their mids and crisp, but not harsh, tweeters.
Some of the older speakers sound pleasing to the ear despite being inferior on paper. While I don't know much about mind blowers, the ADS speakers of yore were very neutral and almost holographic in how they performed. They carried that trait until their ultimate demise. Most other speakers have a very up-front or a certain "in your face-ness" about them that most do prefer in a car environment. But the thing is, if you don't like high Q mids or upfront sounding speakers; you have a choice between finding vintage car audio speakers -or- spending who the hell knows how much trying to find a similar sound.
It's much like how the ear prefers the sound of vacuum tube amps & vinyl records over solid state devices and iPods.