Yet another reason why the LCD is blamed for inferior gameplay.  The tearing is much more noticeable since FPD's are driven at 60 Hz.  Unlike a CRT where the refresh rate is also the rate that the light from the phosphor that one sees is driven, the CCFL on a FPD is driven at a very high frequency so flicker is never perceivable.  
I often wonder what a FPD that had a 100+ Hz refresh rate capability would look like with v-sync off.  It would be expensive as the card would have to be custom unless it was run analog - yuck!  Of course if it had BNC inputs like good CRT's did...
My X850XT "pumps" when v-sync is on.  Lots of scenes can be rendered at FAR greater rates than 60fps but the card is forced to stay at 60.  It makes it seem like it's lagging or pausing so removing v-sync is the only way to go.  It's blazing fast but then you have tearing.  Oh what to do???!