It really depends on the site's needs. Let's say that you already have acquired enough anchor text specific links but need to water down your links with greater brand and/or anchor text diversity. A sitewide link with your brand may be just what your site needs (plus it makes it look like you have a ton of links, discouraging potential competitors).
If you haven't yet acquired enough exact match anchor text, I would go with ane ditorial page with a single link to the single page that you are trying to promote. The 3 links-per-page thing is beginning to become an easy footprint for blog-review style link building.
That being said, in terms of pure PageRank / mozRank passed, a sitewide link would pass the most. Whether that correlates with rankings is a totally different question.