I haven't used a Pedal Monster but have heard good things. I have a Pedal Commander on my 18 and it helps for sure. It doesn't completely eliminate the lag, but makes the truck much more drivable. I will be getting a tune here in the next few weeks now that I've finally had the VB1 completed which comes with it's own throttle sensitivity adjustment so will pull the PC. So.....if you can afford it right now, a stage1 tune will give you better throttle sens, plus a bunch of other benefits, but if you're not up for a $1000+ tune, then one of the other devices will put a smile on your face in the mean time.