JBL GT607c (http://www.jbl.com/car/products/prod...at=GTS&ser=GTS)
JBL P650c (http://www.jbl.com/car/products/prod...at=POS&ser=POS)
JBL C608GTI (http://www.jbl.com/car/products/prod...at=GTI&ser=GTI)
Cerwin Vega V-Max (http://cerwinvega.com/products/mobileaudio/index.html)
Polk Audio (http://www.polkaudio.com/caraudio/pr...peakers/6-1-2/)
I like the specs on the Diamonds and read a few good reviews on them.
It seems that the majority of Diamond owners are happy with them. Same goes for the Focals.
I haven't had any real world exp with either of them but I have had quite a bit with JBL & Vega.
C.T. :wink: