What would make an Xbox 360 owner move to Sony PS3?

With prices of the Xbox 360 and Sony PS3 being very close, currently the Playstation 3 is known to have the much better hardware but not the better choice of games.

What would make an Xbox 360 owner move to Sony PS3?

For thousands of people world-wide the answer was simply “RROD”, the hardware was so unreliable that many 360 owners went and brought a PS3 for better hardware and less games (in the hope for more in time).

Now the sides are even:
The Xbox 360’s hardware seems to be much more reliable now with hardly any reports of RROD, so it seems Microsoft have fixed this issue.

The Sony PS3 has not only won the High Definition movie war, but 2008 will see them increase the games collection massively, while it will still not be as good as the Xbox 360 in games collection, it will have more games than you have time to play.

The Xbox 360 has more gamers, so what would make an Xbox 360 owner move to Sony PS3?