I\'m curious what your solution is for high performance XML parsing on the iPhone is, given its limited amount of CPU power. I have reviewed the XML Performance App that App
If you want to use libxml2 with an Objective-C front, take a look at this useful set of wrapper functions.
You issue an Xpath query to your XML document object and get back Foundation class objects: NSArray, NSString, and NSDictionary.
These functions help unite the speed of libxml2 with the readability of Objective-C code.