I honestly can't see how it would be better - here's why:
My tap water is around 300ppm and my static tank is 1000 litres (1 million millilitres) - so an unfiltered tank must contain 300ml of dissolved solids.
For the sake of math, lets say my system isn't running as it should, and is pumping water out at 1ppm,.. only removing 299ml of dissolved solids,... what would it take to get my water from 1ppm down to 1ppb???
At the very most,.. if the parts per billion system worked perfectly and removed every trace from the water, the best it could do is remove the final 1ml of dissolved solids,.. meaning that its best possible performance produces water only 0.333% purer than a standard system.
PPB is marketing bull - plain & simple. If you think it works better for you, you're simply walking proof of the placebo effect.