[edwelly]

I installed Car Stereo for 8 years. I was the head installer on a shop for 3+ years. all of the brands that you have mentioned are fine products. There are 2 things that should determine what speakers you buy (assuming the speakers are within your budget)
1. What do they sound like to YOUR ears? We each here things differently so I would suggest finding a very well recorded CD and listen for as long as you like. While I am not a huge fan of jazz, I find that jazz usually has a GREAT variety of sounds plus it is recorded well.
2. What do they sound like in YOUR car? While this may sound impossible, I would suggest trying to find a friend who has the same vehicle as you and see what he/she has installed. Listen to how it sounds in the vehicle (try to turn off everything BUT the speakers you want to listen too… ALSO, turn the treble and bass to flat). This will give you a much better idea of what you are looking for.
One of the most important things to remember is “the speaker will sounds just as good as it is installed”… Meaning, if you really install a speaker well, then it will sound well. I have seen people spend $500 on a set of front speaker and they sounds like crap. I have also seen a $50.00 set of speakers sound GREAT! All due to the install. Think about how you want you vehicle to sound and then try to achieve it.
Hope this helped and if you need, you can email me or PM me for any installation tips you need.
---edwelly

p.s. M.B. Quart have the best sounding car audio speakers IMO