I bought thiavair cooler two years back in summer. Main reason to buy a cooler is lower electricity bill and no harm to health as in case of air conditioner, and I must say this cooler satisfy in both the criteria. Cooling effect is good.
No need to change water frequently as in case of old coolers. Ice option is also there but its not that effective. You will not that moist in room as in case of normal cooler. If elecricity is concern for you than go for it.