CR Spotless 1 Cartridge Refill Reviews

I have the CR spotless 300 gallon unit. Currently I am choosing the preassembled resin cartridges simply for the fact that they are only $10 more expensive over a loose resin bag. I get the resin swap is easy, but at only $10 I don't have to worry about spilling resin and get a quicker swap. As far as performance they work great and are a must have for someone that doesn't have any form of filtration or softening on their detailing spigots. How far your resin goes is entirely dependant on how you use it and the ppm of your water. Higher the ppm the quicker the resin goes.