The 9500 is actually faster then the 9600 in many test. I personally have a 9700 all in wonder, and have really been satisfied with it.
My suggest,
www.newegg.com, and get the saphire 9500 for $139.
The 9500 was basically a 9700 cut back. The 9600 is actually hardware different then the 9800, thus the lower speed when compared to the 9500.
Here are some quick links for you
Decent end Radeon 9100 - $70, better then the 440 MX I believe
http://www.tigerdirect.com/applicati...21087296860950
4200 - $120
http://www.tigerdirect.com/applicati...?sku=P450-7241
9500 - The one I would get, Tigerdirect isn't the best.
http://www.newegg.com/app/viewproduc...102-271&DEPA=1