Backspins can work, I prefer them when backspun into over/a drop rather then a full rewind.... unless the crowd is demanding it.
Dubstep is different, rewinds are pretty much standard. Skream & Benga know how to fucking rewind... I dont even fuck kno how they made some of those sounds with the vinyls, never heard rewinds like that before. As Benga would say Sic, Sic, Sic thats fucking Sic Skream, you taking the Piss Skream? Fuck yeah. Skream B2B Benga = best dubstep set ever.