Wanting to know your opinions, after crunching the number it looks like a single PW and a single LC will (for S4 v T4) produce the same number of wounds on average. That said, is what is your view on the single LC? In general it's about 5-10 points more than the PW and, while you lose the bonus attack, you do get to reroll to wound. In general I think I'd go with the PW only because of the point value. If they were the same cost would that change your opinion?