For the DRM freaks, Bioware has stated that the Steam version has no extra DRM on top of Steam's. Rumours say the same for Spore and maybe more, but I think thats mostly speculation.
The news item contradicts itself.
REDWOOD CITY, Calif. - December 18, 2008. Just in time for the holidays, Valve announced that, Spore™, Spore Creepy & Cute Parts Pack, Warhammer® Online: Age of Reckoning™, Mass Effect®, Need for Speed™ Undercover and EA SPORTS FIFA Manager 2009 are available now to gamers in North America via Steam, a leading platform for PC games and digital content with over 15 million accounts around the world.
"We are pleased to extend our holiday titles to gamers worldwide via Steam -- a revolutionary technology that is one of the game industry's most successful digital distribution services," said John Pleasants, President, Global Publishing & Chief Operating Officer.
Hopefully we'll see a worldwide release soon
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Also thanks Swinub i'd forgotten the code to see the US store and I wanted to see the prices.