(mods please delete if inappropriate)
just wanted to mention an inexpensive (20 bucks) minipci atheros part I saw recently at weirdstuff warehouse (no connection to them, other than being a satisfied customer several times over)
XG-621N / AG-621 is a nortel part; AR5212 chip ah b'lieve.
have not tried. personally I still prefer ralink, but this seems a fairly priced alternative to cm9.