I'm planning in the future to make a white scar army and in the fast attack section I have been torn between 2 unit types. I'm planning to fill the
FA slots with these units to give me as many squads/units as possible on the board as I love the idea of mass numbers of bikes zooming around

. The options are either:
- 3 units of 3 attack bikes each, all with multi melta's, v good anti armour so definitely has to be dealt with by alot of armies which will draw some of the fire power.
- 3 units of 10 scout bikers, 3 astartes gren launchers and sgt with combi grav in each squad, these can combat squadded so will give me 6 units for the enemy to think about and offer some good anti infantry and good anti light armour, and with outflank that offers another thing to think about for the enemy
The rest of the army has troop bike squads with lots of grav goodness and an att bike with
MM in each squad so either
FA choice will prove useful in either maximising anti armour or increasing anti infantry. Would love to know which would be better and to know your experiences with both choices (did they make their points back ect).
Thanks