Symphony winter air cooler is excellently designed because of its three sides which are wider and taller plus the air penetration is far better than other coolers.
The panels are designed greatly and placed at angles but not just put straight just like other air coolers. The motor is powerful both air and water as it finishes around 10 litres of water in four hours thats pretty good in summers.
You can put ice in th water tank to make it more cool. I live at a place where temperatures reach even 48°C in the summers so a perfect solution. The wing pads also rotates in to and fro motion to spread air across a room.