在iPhone上使用libxml2或NSXMLParser可以获得更好的性能吗?

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 Apple provides as a demonstration, and it seems that for the data feed (300 iTunes songs) that they're parsing.. libxml2 always seem to come as the forefront winner. I'm curious what your solution is for high perf