The best sounding speakers are;
Image Dynamics Compression Horn Drivers.
SQ; Exceptional
Power Handling; Exceptional
THD; Exceptional
Cost; They are pretty expensive
Benefits; don't have to worrky about crossovers
don't need alot of power
it is one speaker that does the job of three (tweeter, midrange, and midbass)
speakers can be placed almost anywhere without affecting the sound stage
Downside; they cannont be mounted in stock speaker location
A pair of 6" mids with 1" tweeters in the front doors and a pair of two wait 5"x7"in the readr doors give a really nice sound, stage the sound very well and install easily (both the 5"x7" and 6" drop in. The 1" tweeter can be mounted anywhere.