High Quality Speakers for 2005 G35X Sedan (No Bose)

I'm looking to get some high quality component speakers for my '05 Infiniti G35x sedan. I do not have the bose system. I'm only looking to spend $200-$300 on the speakers. Anyone have any suggestions? Here are the ones I'm considering so far (sort of in order):

Rainbow: Power Line CMX 265 ($300)
Morel: Tempo 6 ($240)
Diamond Audio: M661 or D661 ($200-$230)
Focal: Polyglass 165 V1 or V2 ($230)
Boston Acoustics: SL60 ($225)
Image Dynamics: CXS64 ($360)
CDTAudio: CL62 ($250)
Infinity: Kappa ($230)

I might also consider JL and Audiobahn. I think I'm ruling out the MB Quart 'cause a lot of people complain the tweeter's too sharp. Dynaudio, Hertz, and Seas seem too expensive.

A lot of people say it depends on your music tastes and your specific car. I listen to music like Postal Service, House (Milk & Sugar, Miguel Migs), Dave Matthews, Beasties, some hip hop (Notorious), and some jazz (Dizzy Gillespie, Sonny Rollins). Have any of you put any of these in your G35? Any suggestions for speakers for this kind of music?

Thanks!

I would say go with the Infinity's because Harman Int. Industries owns them, who also owns Mark Levinson, which is in my opinion the best speakers you can buy. What ever you do, do not get Bose. Audiobahn is also a fairly well known company for high quality but i recommend Infinity or Coustic