I bought the Aquaguard Total Infiniti model in Jan 2012. It worked for 3 months and started giving problems. It stopped dispensing water and the led lights would not glow at all.
The service person says that there is a fault with the PCB and they took about 3 months to get back to me. Now the unit is taken for repair and still no response from them. The customer service is hopeless to say the least. I would strongly suggest not to go for this model.