usually i don't have much of a problem with refurbs, but my experiences with getting a used ps2 and g400 have turned me off to used sony stuff.
i got in on the half.com used ps2 deal ($250, but without controller through worldsbestdeals), and got a defective unit. then i remembered that about a year ago, i tried to buy a sony g400 monitor from sony's refurb store, and they sent me 2 units that didn't work.
seems to me that the best way to avoid sony lemons is not to buy returned stuff.