Don't mind what they said. The PlayStation 3 as it comes is similarly equipped (better, depending on how you look at it) to Microsoft's XBox 360 Elite which is... Voila: $600.
Just compare the two to what you think would be better for you.
As for NCAA 08, I believe the best version will be available on the XBox 360. The PS3 is still new enough that it won't be getting the full game; think something like the watered-down crap that came out on the 360 last year. Although I have been told by multiple industry nerds that the best version may still be on PS2 and XBox.