I have used both and I prefer Tunze. Now granted I used the original vortex's and they have come a long way with improvements I'm sure but I was not real happy with them. Too many issues with noise, wet side falling of the glass, constant cleaning to keep operating, replacing wet sides ect. Tunze was an instant plug and play. In fact I still have some of the original units and that's from 10 years ago. Although they are more noticeable in the display my goal is for people to notice the inhabitants instead of the equipment!!