Each of my posts has a table of contents that contains the links to each page or main section in the article.

What are your opinions on which html5 element would be most appropriate as a container for this content? aside, section, nav, details?

Here's the typical markup (currently using a generic div for the container):

Code:
<div class="cb-toc">
    <h4>Table of Contents</h4>
    <ul>
        <li><a href="#/">Compensation Disclosure</a></li>
        <li><a href="#/2/">Good Faith Recommendations</a></li>
        <li><a href="#/3/" class="active">Potential Bias and Due Diligence</a></li>
    </ul>
</div>