I've read that it has less gain then the other models. Could it still do metal/metalcore/hardcore. Could it do a Lamb of God, Misery Signals,Killswitch Engage, and similar bands kinda chug?

umm, idk, they dont have a ton of gain, but they sound awesome. With a boost you get you do what you want, like adding gain. It can do metal alone (IMO), but metalcore may need a boost.
i never tried a purple strip but if it has less gain than the other marks then it might do some early metal alone but with a boost it might do some Metal Core
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