After trying out several boost pedals, I've finally found one that has dethroned the mighty TS9! This thing can cop pretty much the same tones as the TS9, but with much more clarity, headroom, and dynamics. It doesn't have that nasally congested thing going on like the TS9 does. I play metal, and this is the best boost I've ever used for that by far. It's very open and dynamic, and just plain feels good to play through. It also has several different modes and settings that can really change up the drive, feel, and dynamics as well, and then on top of all that it's got a second channel boost as well; so much win!