I recently installed a Megneg onto my Rockshox Deluxe, at the same time I increase the shock stroke from 50mm to 55mm, so effectively increased the rear suspension to 135mm. The Megneg seems to have helped keep the suspension progressive, I previously used all of the volume tokens to make the shock ramp up, the megneg gives better sensitivity at the start of the stroke and also increases the ramp up at the end. So a win win.