使用Ajax或Silverlight调用Web服务？哪个表现最好？

I'm building an ASP.NET AJAX application that uses JavaScript to call web services to get its data, and also uses Silverlights Isolated Storage to cache the data on the client machine. Ultimately once the data is downloaded it is passed to JavaScript which displays in on the page using the HTML DOM.I'm building an ASP.NET AJAX application that u