You left out two,

PS3 Vs XBOX 360
UMD Vs DVD

Well, the UMD format already dead leh ........ nowadays new movies are not released on the UMD format anymore and PSP owners rather convert their dvd movies to MPEG-4 AVC format and watch it from the MSPD.

As for Blu-Ray, if you think it will win the HD war format just because the PS3 plays it, then you'll be disappointed to know that the PS3's sales are not as good as Sony has predicted and it's no indicator that people will buy a gaming console to watch movies. Even for our current PS2 and the original XBOX, how many people are using them to watch movies, right?

Sony is taking a big gamble now and honestly, I don't think there'll be a PS4 in the future, PS3 might be the last console from Sony as they have suffered losses amounting to USD200 plus for each PS3 sold and the software to harware sales were also disappointing, at least XBOX 360 and Wii sold more softwares than the PS3. In the video game business, softwares means profits, not the console. It's the same as printers, they make money from consumables. If Ken Kutargi, the father of 'Playstation' has been kicked out, this could only mean that the top management is disappointed with the current PS3's sales. If they lowered it to RM999 and comes with 5 Blu-Ray movies of our choice, I bet it will take the top spot being held by Wii currently within a few days.

Another annoying thingy about Blu-Ray is even though the 50GB dual layered Blu-Ray discs are available commercially, there are still movie studios still using MPEG-2 compression codec and some movies only come with the normal Dolby Digital soundtrack and most movies lack of special features despite of the huge space offered by dual layered Blu-Ray discs. Hopefully, we'll see some changes in the near future, I'm still not very happy with the way movie studios are releasing their HD movies on Blu-Ray.