I used to have 60Hz monitors and with v-sync on I never had any screen tearing. I never minded when the fps went down to about 52. Nowadays with my 144Hz it seems like a massive failure to go down to 52fps, and I think a big sudden dip in fps is more noticeable compared to when it's just a small % decrease to a low but playable figure. And when I had a PS3 on a 32 inch TV I never had tearing and it seemed to look really good at the time. I didn't notice much difference going to v-sync. But I think I would notice if I turned it off now.