I picked up a s510 a few days ago - RF mouse keyboard combo. 29 bucks after rebate and the deal was good for a few more days.
Flawless lagless bliss!!!
Works great in any text entry, mouse works in the browser. Very nice shape too - it is wafer thin with brushed metal.
Great addition to my PS3, and totally necessary for my couch directed terminals in YDL.
Thought ya'll should know....