In the A319 I would gently fly the no wheel down as it wasn't at all an issue. You just dont want to loose elevator effectiveness and let the nose fall onto the ground. On the A346 you need to positively de-rotate the nose down. It very possible to be left with the nose in the air and run out of elevator control in the A346. On the A342/A343 I aggressively de-rotate after the first of the rear wheels touch to try and avoid the second thump that seems to haunt me.
DH