Well my family has been using Aquaguard for a very long time like 10 years and we have faced only little problems which are common when coming to electrical devices.
coming to usage part it is very easy to use this purifier u need not store water in any pots, it automatically refines the water from time to time. a big advantage is that it even purifies bore water. u need not wake up at early mornings waiting for the municipal corporations to release water.
the machine they provide us is a quality one and it comes under an annual maintenance contract(AMC). WHICH means that any repairs in a year will be done by them for free of cost.
The machine is even stylish to look your guests will surely be impressed by that and think u has a lavish life.