Blu-Ray is a bit better in the storage capacity sense, but soon all players will support both formats. Kind of like DVD-R, DVD+R, DVDxR, DVD/R, DVD to the third power of R, etc.

How many people know and truly care about all the differrent DVD formats? Not many! They all work, and 99.9% of modern players/burners are compatible with all the different formats and auto detect them, so it's a moot point. It's completely invisible to the end user, except for the letters on the blank media.

I'm just waiting for the first affordable non-copyright protection enabled BR burner to come out along with 100mbit home connections, so we can hear a whole new generation of wailing and teeth gnashing from content providers about piracy.