Why not use the built-ins?

If you have the choice, use the built-in libraries as they are compiled C and much faster. Here's a handy benchmark test and the Stack Overflow post that inspired it:

http://whitlock.ath.cx/FastCrawl/benchmark.php
http://stackoverflow.com/questions/3603511/html-scraping-and-css-queries

The only reason I can think of for using Simple HTML Dom is if you are on shared hosting and the XML php extension isn't enabled.

The simplehtmldom library is the best for broken HTML.
Please consider implementing own module if you like built-in one.