PHP5 DOM saveHTML() vs. saveXML()

Hey guys. I'm generating pages using PHP5's DOM functions, and I
noticed that if I use echo $doc->saveHTML(), it kind of just spits out
the document, but if I use $doc->saveXML( $root, LIBXML_NOEMPTYTAG ),
it outputs the document but the source is formatted nice and
pretty-like, which makes debugging the underlying script a lot easier.
Has anyone worked this way before? Is there a particular reason I
should stick with DOMDocument->saveHTML() instead, that will bite me
later if I keep working this way?

thanks!

.

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