Sorry Robini, totally disagree.
Flap3 on the 320 makes a HUGE difference to the pitch attitude at landing. The Vref increase is about 4 knots, but you will have about 7ish degrees nose up as opposed to 4 in flap full. Personally don't find it as stable on the approach, but company SOP is F3 unless F full is required.
The 320 IS much more of an issue in the flare with F3 than the 321 in F3. Don't try to hold it off. I find closing the thrust levers at 25R and a tiny little flare about 15R will see you right. If you use a Flap full flare with F3 you will float along at 8 feet!
