VITASHHOWER TP-1000 Vitamin-C Shower Filter

I've used Vitashower Vit C shower filters for a number of years , they do improve the quality of the water, you can feel it on your skin. The original design had a design weakness where after a while the plastic casing would crack and leak around the thread where the filter cartridge and the top part of the filter would screw together. When I order this replacement unit because my old one was cracked I actually received the new model SF-2000 which has a much better design and should last a lot longer. I think this merchant has not yet updated its listing to reflect this , still labelled as SF-1 when he actually ships the newer and better SF-2000.