[wp-hackers] Best SEO plugin?

[artur]

oh wise list...

i need an easy to use SEO plugin for my WP3 multi-site subdomains/customers.
- ideally one that requires little setup,
- does all the magic out-of-the-box,
- great support,
- and lightweight code.

ive looked at HeadSpace2, Platinum, KeywordStatistics, *WPSEO, *SEOPressor..

* also i dont mind paying if it  is really worth it.

any comparison charts out there?

thanks!