I just checked out the mister...it looks intimidating lol. What makes it better than the hand pumped misters?
Well, for starters, they dont kill your hand. lol
They are easily adjustable, with a simple turn of the nozzle head.
They can provide a very fine mist, to a light rain, to a heavy rain, to a strong blasting jet.(the last of which is good for blasting poo and other things off of cages/branches)
The lever can be locked in place, so you can set it up where you like it, and it will empty itself where you need it. (good for giving long showers, outside of an actual "people-shower", or even in the shower still, but you can use whatever water you like, instead of tap.)
You can not only adjust the spray at the nozzle head, but by how many pumps you give it.
They are cheap, like 10-15 bucks, and fairly sturdily built, so they last a long time.
It makes misting many cages easier as well, as you dont have to keep refilling a bottle.
They do put out a lot of water though, and it can take some practice/care to not soak your house, if misting inside.
Thats all I can think of.
I misted with a handheld spray bottle for months when I first got a chameleon.
Now, I would not use anything else period.