I love my HBK-4P(S), and mastered it with 7 ML in the head and hunch and an ERML in one arm for UAV's. Then, I saw Bearclaw running something like this (below) and figured it was silly not taking advantage of the Medium Laser HSL +1 quirk. Then I tried it. With a fully skilled hunchback (all four laser duration nodes) combined with the 10% laser duration quirk and the hard points, this thing is freaking amazing. I was running around killing enemies left and right, being careful and working corners. It was shocking. I even got two teamkills in two games from teammates running by in front of me as I was firing my super-convergence super-fast pulses into a dying enemy. It's powerful. I like standards in this build, because the heat is much more manageable if you lose an ST and the drop in kph is minimal. I keep the hunch in weapon group 2 and the head in weapon group 1, and I stagger when it's easy, but the ghost heat when I'm in a hurry isn't a big deal.