I've tried several & I'm happy with most of them, but this is hands down my favorite! I LOVE that it can run for so long... also, it's not a huge thing for the amount of water it holds! Love that it can go FULL BLAST & really fill a room quickly or just a tiny bit. I have a very large room with vaulted ceilings open to the second floor & it seems to fill the whole room! You can smell the essential oils from the cat walk upstairs!I also LOVE that I can run it through a lamp timer (like when you go on vacation) so I can be on & off as I choose... Because it has that red on/off switch I can put on 30 mins & off an hour then off all night when we're asleep! I fill it up & just let do it's thing, even if we aren't in the room! With the timer it will run much longer on the low setting... I put 10 drops of OnGuard & it's protecting everyone that goes past that room all day!Oh, also love that I can spin the top spouts so it points in two different directions or same way... way cool feature!Happy camper & the price is sooooo right for how great it is!!!