I'm not sure it's safe to say that the S2 and S3 are mainly owned by geeks. Samsung have done a good job at targeting a similar demographic to the iPhone with those devices.
They're among the most expensive Android devices and that's why I assumed they mostly owned by passionate users. My geek friends who are not on the Apple side of things have Nexus and S2/3 and the rest of the people I know who just wanted a not so expensive smartphone settled with Desire or Magic and so on.
