I highly recommend the mistking system, money well spent (a rare thing these days).
Just remember, you need to prime the pump before use.
Connect the 1/4 tube from your water source and the other end to the pump input, turn pump on untill you see the water coming out the outlet on the opposite side of the pump, connect your output tube going to the nozzles.
These gets rid of the air inside the pump, and fills it with water.
Also, if you alow the pump to run dry, you will need to prime it again.
It is normal for the pump to vibrate, this can make the tube lines shake and make a rattling sound. You can fix that by placing vibration damping feet under the pump and using clips to attach the tube lines firmly to the cages.
The timer that comes with the system takes a bit of getting used to, the instructions are a bit confusing, and there is a bit of a learning curve involved.
If you have montanes or panthers, I recommend at least 2 5 minute mist showers a day.
This gives them time to amble their way over to the water and drink.
Keep in mind, you are simulating nature, and when it rains, it lasts more then a few minutes.
You will need to figure a good drainage system for your cage, because this thing will pump a lot of water
If you order the starter system from the mistking website, I recommend you select the option for the upgrade pump, MKP-125-100 (it has a yellow label)
for an extra $30.00. It's a much better pump.