Depends on what you want. The AC will give you that mid emphasized tone, great for bridge pickup work, rolled off high end, still great bass, but more in the low mids. The LTD gives you your guitar's tone plus a very slight mid bump, nowhere near as much as the AC booster. It sounds way better imho at low gain stuff, like slightly broken up tones. I love them both for different reasons, am bpicking up another LTD as we speak to run alongside my AC booster. Hope that helps.