I have the Mustaines and yeah they're great. More top end than most which I like. Retains tightness too. the Gus G Fire set is great as well. Very impressive. I'd say that and the Mustaine set are more similar than the Loomis. No experience with his set unfortunately. 5150 III may like a smoother pickup with that much gain and aggression its' known for so if the Loomis' set really is as smooth as 6stringerguy says then that may the one for your setup.