Best cache plugin in the market

I am overly satisfied by the W3 Total Cache Plugin. I believe it is currently the best cache plugin in the market. I would give 5 stars if not for those query strings (yes, I have unchecked “Prevent caching of objects after settings change” and I still get query strings). There are also some other minor problems (eg I get grade C for inline small css), but currently I would like them to fix the query strings issue.