Hi Sundi

We have all of our info listed and haven't ever really considered going private but I have many clients who are listed as private. They feel the fee is worth the extra anonymity.
As far as the statement about ranking higher for
SEO if you purchase your domain name for an extended time, in my estimation, that's not quite true - the longer you OWN and operate your site (ie - populate it with relative content, etc.) the better your rank will be (over time) but I don't see what difference purchasing a domain for 5 years vs. 1 would make to Google, or how they'd calculate such tihngs...of course, there are a ton of variables that go into the search rank algorithms, and it's entirely possible that this is one of them I'm not aware of...