Magnetic water softners

Have recently moved to a rural location and have a rental water softner of the traditional ion exchange type, two cylinder tanks and a salt tank, timers etc. Rental cost is $400/yr plus salt. Does anyone have first hand knowledge of magnetic units,ie; GMX or equal. Also trying to find Kinetico dealers in US where I can get more direct info. I would really like to dispense with the expense, noise and loss of space with my current softner type.