There is a slight differnce although most people wont know.
The capacitance of the cable, thickness of the cable and sheilding will vary from manufacture to manufacture. However that would not change the cost of the cable by much +/- 20%
Basically a cheap HDMI cable will do the same as a expensive HDMI cable most of the time.
It would start to matter when the cable lengths are increased.
Predictions JAN 08
2008 PS3-19.5M(actual 19.5) XBOX360-23M(actual 27.5) Wii - 37M(actual 45.8M)
End of 2009 PS3-27 25M XBOX360-30 35M Wii - 48 63M (revised DEC 08)
Price Point
Mid 2008 Wii $250 Xbox360$249 Xbox360(HDD)$299 PS3 $399
Mid 2009 Wii $189 Xbox360$199 Xbox360(HDD)$249 PS3 $339
Mid 2010 Wii $ 149 Xbox360$159 Xbox360(HDD)$199 PS3 $289
