Is GDataXMLNode fast?

Just curious, I've always been using TBXML & NSXMLParser to do my parsing, but I just found out about GDataXMLNode, and what intrigues me is that it has the capability to use XPath. That's a huge bonus in my opinion. However, I don't want to make 开发者_C百科my app unnecessarily slow just to make it easier for myself. Any opinions?

Edit: Oops, I just found this:

But please, I would still like to hear any opinions about using this library.

I've created an open source test application that uses all the XML parsers I could find, including the ones you mention, and TBXML is clearly the fastest you can find so far.

It's here: https://github.com/akosma/iPhoneWebServicesClient