There are a million different XML parsers for the iPhone. I have a medium sized XML file that contains alot of duplicate tags (at different points in the hierarchy). I was thinking about TBXML but I was concerned about its lack of XPath support. For instance lets say my XML file looked like this.
<blog>
<author> foo1 </author>
<comments>
<comment>
<text>
<![CDATA[ HTML code that must be extracted ]]>
</text>
<author>foo2</author>
</comment>
<comment>
<text>
<![CDATA[ Here is another post ]]>
</text>
<author>foo1</author>
</comment>
</comments>
</blog>
Basically my requirements are that I need to be able to extract that cdata. And know whether it is the blog author a comment author.
Best comparison I've seen on the subject:
http://www.raywenderlich.com/553/how-to-chose-the-best-xml-parser-for-your-iphone-project
The difference between the slowest and fastest parsers in his case was a factor of 2. Depending on your feature requirements, there are definitely parsers that can cut your parsing time in half.