Can drink la, I'm sure haha, nothing worse from drinking from tap :p But I have reserve on the ozone thingy, killing smells and bacteria without even the need of using hand wash detergent. So, I came home, did some research but I won't share la, since u have bought it. In short, nesh is not as receptive by those residents in KL. They mainly go with amway, coway, pana sonic or bacfree. Having said that, the water there is full of m&d/sands, so maybe nesh doesn't do as good a job on this, hence lowly ranked by them.
I find that water in JB is still decently clean, as in not brown nor smelly, so nesh might be popular in jb?
Based on the price, look, system and quality of coway and nesh I saw at their booths, I would go with coway, if I was to buy it without research. They even poured a cup for me to drink.
Sorry hor bro, just my honest feedback, since u and crystal asked.