The reason I bought two of these was the combination of the excellent price and 3 year warranty. I have had my af-180's for about 6 months now and they still work but they do have some faults one being that sometimes the heat up timer for the fluid can mess up meaning that it squirts out oily fluid that is sticky. I have also noticed that one of my smoke machines sprays smoke at an angle which is because when it arrives the nozel was bent. I would still say that these smoke machines are a reliable product and for the price, warranty, dmx capabilities and great service from thomann I would recommend buying them as a great affect for your setup (keep in mind they won't work in places with smoke sensitive fire alarms). Works well with "stairville Fast Fluid".