An inexpensive machine with steady noise - no clicks or noticeable loops. Just wish it was a bit louder.
I got very lucky that this sound machine went on sale as a lightning deal for $36 just one day after the Brookstone sound machine I'd had for over a decade finally went kaput.<br /><br />In looking through the Amazon reviews of other machines, it seemed like the highest quality ones were very expensive (for me), while the less expensive ones had reviews that complained of things that bothered me with previous machines, such as clicking noises or noticeable loops in the soundtrack.<br /><br />This machine has neither problem, while still being relatively inexpensive. Note that there is only one noise setting - white noise, which is the only one I wanted; there are no crashing waves or babbling brooks.  I use it every night, and it's small and lightweight enough to pack in my carry-on bag for trips.<br /><br />You control the sound by twisting the top of the machine to close or expose more openings.  There is not a lot of variation of the lowest and the highest volumes, which is the only drawback for me.  I like the volume of my noise machines to be quite loud, and I wish that this machine was louder.  It's not a problem for me at home, where I live alone in a quiet neighborhood.  If you are sleeping in an environment that has just moderately loud noises, I don't think this machine is loud enough to completely block those out.  (Right now, as I'm writing this review, I'm a houseguest at a relative's, and I'm sleeping in a guest room with the door closed.  With the machine on max volume, I can still hear my relative walking on the slightly creaky floors in the hallway, and I can hear doors opening and closing, even though it's the middle of the night, and everyone is trying to be quiet.)  So, I bring along earplugs on trips to supplement the machine, if needed.
Rating: 4 stars