Just a small update:

According to this video

http://www.phonescoop.com/articles/article.php?a=304

The guy says that the n900 automatically switches from 3G to wifi if it detects any saved wifi networks in the vicinity. Is this feature already there on the iphone? Does it happen automatically?

Another feature which was great to hear was the guy showing off the n900 mentioned that he could download a torrent using transmission within 10 minutes and then play that 2000kbps video without any conversion. I bet the iphone does not support many of the codecs... is that right?