I've always been a big fan of Diamond Audio's speakers. I have heard several of them in people's cars, and i'm always in awe. I would personally have some, but a bit too pricey for me. I think MB Quarts are really good pieces too, but i always thought the highs from their metal dome tweeters were way to bright, and metalish sounding, and would hurt my ears at a very high volume. Not exactly a pleasurable listening experience really..My best advise to you, as I tell many others, is to go out and demo as many speakers as you can, to find out what kind of sound you are looking for. You will be surprised as how different many speakers can sound from one another..Usually, like the old saying goes, you get what you pay for. I have Sony Explode 5.25 3 ways up front, and Sony's 6.5 3 ways in the back, combined with my Eclipse equalizer, and amplifier power going to these speakers, it sounds awsome IMO. I'm not competeing anymore, so these speakers do nicely, and got them for a great, economical price. The equalizer makes a world of difference for how speakers sound too. You can customize the sound to your exact tastes.

13.5 @108 MPH-2.2 60ft(stupid FWD!)
S16G @ 18 PSI/FMIC/Running on MegaSquirt II (Now with sequential
fuel injection)
My webpage: http://eclipsed4evr.home.comcast.net
-1998 Mitsubishi Eclipse RS-T- "Toy"
-1992 Plymouth Laser Turbo AWD(SOLD)
-2000 Honda CR-V(daily)