Flavius Infernus wrote:I've used both pretty extensively in mech armies and have converted all my razors to las/plasma.

First, to put what you're giving up in perspective: a single-shot lascannon that shoots every turn during a 6-turn game gets 4 hits on average. A twinlinked lascannon gets a little over 5 hits on average. So you're trading the plasma guns for one extra hit per game.

So if your plasma guns get you even one extra wound/damaging hit per game, you've made up for the loss of the twin-linking on the lascannon.

"But" everybody says, "you gotta sit still to shoot both weapons." I almost never shoot both weapons at the same time. I move 6" and shoot the weapon that will do better in the situation that I'm in.

The way it usually works in practice is that you shoot the lascannon in the early game, when things are far away and mostly it's vehicles you want to kill. Then in the mid/endgame when terminators and marines are close to your vehicles, you rapid-fire them with plasma (or just shoot them with a single plasma at range 13-24, since it wounds on a 2+, has the same AP as the lascannon, but is twinlinked). If it happens to be safe to sit still, then you can fire both weapons.