I owned a set of the entry level CDT 6.5" components and GAVE the woofers away because they failed to reproduce midbass and the midrange was distorted. They were beat out by.... get this.... a set of Alpine Type R 6.5" components. I did keep the TW-25 tweeters though because they were easier to retrofit into my 1997 Civic tweeter pods than the Type Argh tweeters.
As for the sound of the Type R tweeters compared to the CDTs, it was a toss up. On one track the Type Rs would sound slightly better whereas on another, the CDTs seemed to provide the detail that I expected to be there. Since the permanent retrofit solution was easier for the CDTs, they stayed. //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif
I also heard a set of the $750 CDT components in a friend of a friend's vehicle. In all honesty, I was not impressed with how they sounded for the price. Although they sounded better than the CDT CL-S60A components that I owned, they didn't sound $600 better.