I had 2 kicker comp 12s in mine and they hit pretty hard. They were a good entry level speaker. I just recently traded up to some cerwin vega 12s and I love them. They're as clear sounding as can be and reasonably priced too.
The best sounding speakers in the world are the ones that YOU like best. Everything else is just opinion.
Grabber Blue "Betty" 2012 V6 Six Speed, 3.55, BBK cai/throttle body, longtubes, x-pipe, axle back w/oem tips, Lugo Performance Dynotune, Zex 100 dry. I need factory v6 foglight housings, and the stock 11/12 gt grill with the light housings.