Android: Best XML Parsing Library?

The SAX XML Parser comes already built into the Android SDK.

Or you could use the org.xmlpull.v1.XmlPullParser - I've found it much easier to use than the SAX Parser and it has other benefits:

http://developer.android.com/reference/org/xmlpull/v1/XmlPullParser.html

http://www.bearcave.com/software/java/xml/xmlpull.html