I love MBQ, and drop in sizes they are amazing, but I have now heard drivers that make the Q's sound like Xplodes......

Hybrid Audio Legatia > MB, Boston, Diamond, Rainbow.... These are the VERY highest sound quality drivers on the planet....and are based out of Forsythe Co.
They have dethroned all theother high end speakers off the IASCA World Champ throne, most of the winners run the drivers now, and they win the team by a mile.