XML is emerging as a major standard for representing data on the World-Wide-Web. Recently, many XML storage models have been proposed to manage XML data. In order to assess an XML database's abilities to deal with XML queries, several benchmarks were also proposed, including XMark and XMach. However, no reported studies using those benchmarks were found that can provide users with insights into impacts of a variety of storage models on XML query performance. In this paper, we report our first set of results on benchmarking a set of XML database implementations using two XML benchmarks.