Long pips or short pips

Oh ,thanks anyways 

It depends on the style of game you want to play and how you want to win your points.

Of course this is just a generalisation, but SP are easier to control than LP, though its somewhat more susceptible to incoming spin (though both are less susceptible than regular inverted rubbers).  Generally people who use SP are close-to-the-table aggressive players.  They attack with short sharp strokes that hit fairly flat and right through incoming spin.  LPs are very slow (generally speaking) so it's usually (but not always) used by defensive players.  It also is better at controlling heavy spin so it's the favourite of choppers.  You can also use LP as close to the table blockers and even attack with it - but it's a risky tactic. 

I prever to use normal rubber for the forehand and the backhand because to can do every attack and deffed stroke and easy to control it