I have both the MistKing and the Big Apple Misting systems, and I absolutely prefer the MistKing.
I've had a Big Apple system connected to 12 cages for 5 months, and I'm not particularly impressed. It's very noisy, the timer can only be set to minutes (not seconds), and the connections between the nozzles are zip-ties, which don't work well even if you add more than the 2/connection they supply. Most of these connections leak a little, some leak a lot and I had to add pipe clamps (I contacted Big Apple about the leaking the day after setting up, and they told me to get the clamps - I can't say I was impressed with that response). I had one connection come apart and shoot off - luckily I was around to shut it down. It does come with a bucket/reservoir, which is nice. In short, this one is noisy, requires a lot of maintenance, and looks (and functions) like something I cobbled together myself.
I got a MistKing a couple months ago for just one cage when they offered the lower price model (both cost me about the same). Love this one. It's relatively quiet (though if you don't secure the tubing it'll get noisy), the connections snap right in, so no clamps or zip-ties, and no leaks. It comes with a timer that you can set for as little as a second, which I think is great. It doesn't come with a bucket/reservoir, though. It also has some kind of anti-microbial treatment, which will cause the water to come out milky at first, and probably isn't good for your plants or lizards (if that was in the instructions, I missed it - you should let it run for awhile, from pump to nozzle, when you first set up). Overall, it's a high quality, professional system for the same price as the Big Apple.
Hope that helps,
Bryan
