One point I did not mention on the other blog, which is definitely an SEO advantage of using the “sans w” address redirect:
Generally, your Pages Per Visit covers your entire website, but when ranking which pages get hit the most, once again www.yostuff.com is different than yostuff.com. Since Google Webmaster Tools allows you to set a Preferred Domain, it is logical to assume that the form of the domain that the Googlebot crawls is important to how it ranks pages. In fact, the above-linked blog post more or less spells this out exactly.
So, get out there, set your preferred domain and make sure your server points users in the right direction. As most of us who’ve been doing this a while can attest, it’s the little things that count.