There is a good thread on the US Powerseller board that offers some insights on how to get a good ranking in Best Match.
As stated often before DSR's are only a minor contributor to Best Match results. You can be "elevated" but if you are starting out near the bottom due to other criteria it won't help you much.
http://forums.ebay.com/db1/thread.jspa?threadID=1000724900

"What else could I do? I had no trade so I became a peddler" - Lazarus Greenberg 1915
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