Ok, I did a little bit of checking around. I think that I would recommend the following 6x9s.
1. Polk EX693A (185.00 canadian at
http://www.audioexpress.sk.ca/caraudio_speakers.html )
2. Kenwood KFC6909
3. JBL DS695
4. Infiniti 6953i
5. Pioneer 69xx
Now, the list above are all three way designs that have cheaper 2-way siblings. I think the Polk's would be your best bet as they seem to have the highest sensitivity and also seem to have pretty much the best SQ.
I left off Sony because I don't have a lot of info on their new series. I can safely recommend pioneer's but they have a huge variety to choose from. The only knoch is that they won't play at the same level as the first 4 speakers I listed. SQ should be close to most and possibly alittle better for some models.
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99 SVT
Sony ES CDX-C910
Sony Digital EQ/X-over
Sony Changer
McIntosh MC440M
Adire Audio Shiva
MB Quart/Vifa seperates
