PPCs.
Once played a 3025 game at a local convention (way back in 1990) with 10 players to each side. I played on the attacking force with 20 mechs (2/player) against an unknown amount of defenders. Our objective was to get across the table (lengthwise) and that included getting past the city that covered 65% of the far side (It covered the entire left side and extended to just past the middle.) The right side at the far end was open. Now there was a road that started in the middle on our starting side and split into a 'Y' before the middle of the city, with the left road leading into the city on the left side of the table and the right road curving around in front of the middle part of the city, then to the right and past the city on the far right side.
Our side was making plans as to how to start and advance. I looked at all of the mech sheets and noticed the one thing that they had in common between most of them, they were armed with PPCs. I suggested to taking all of the mechs en-masse down the road and then take the right road at the split and just take all comers as they presented them selves.
Our side did just that, the bum rush. After the fourth turn the defenders arrogantly said aloud, "Aww, look at the lemmings." I said in response, "They may be lemmings, but there are 26 PPCs amongst the lemmings that are just waiting for targets to utterly destroy in one turn with little or no heat generated....." then briefly paused, "EACH TURN."
You could have heard a pin drop as the looks on their faces was one of concern and "yeah right".
The next turn they called our bluff and brought out a Griffin (3025 version, PPC and LRM 10 IIRC) into view to shoot at us AND NOTHING ELSE... Epic mistake.
So we did an all call with all 26 PPCs between all of the mechs on the Griffin. There were 11 hits. Destroyed the arm with the PPC, armor damage everywhere but the head and one of the other players on the team rolled a LT crit and took out the LRM.
The Griffin was done.
"Lemmings 1, Defenders 0"
"Next"
There were a lot of muffled "Oh S*&t" remarks heard on the defenders side after that.
We won decisively as we got 13 mechs off the far side. We only needed to get 6 off for decisive victory but were not told that until the end of the game.
Yeah, PPCs over LL every time.