First of all, let me say that I have run the gamut with faucet-mounted water filters. It had become a real challenge in my home to find one that actually works and survives with our unusually high water pressure. I first went through two of the Pur units, both of which broke, then I tried the Dupont unit and it worked, but the filters would not last more than a week or so (verified through four different filters). I didn't even bother with the Brita faucet unit because the reviews are so bad. Since I live in a rental townhouse, I did not want to invest the money in a more permanent under-cabinet system, but I was almost ready to do just that when I stumbled on to this thing. What this company has done is taken an industrial idea and implemented it into a very functional consumer product. This type of filter housing is the very same thing I see on industrial machines all the time, used for machines which require filtered water to run. They simply added the faucet attachment and drinking water spout to an industrial water filter housing. It is a simple and brilliant idea and it works well. I will highlight the good and bad below: THE BAD First things first, it is an eyesore. It is a huge white monstrosity that must sit rather close to your sink. I was much more concerned with functionality than aesthetics, so this is not a huge deal for me. If that is a problem for you, though, consider getting a couple of tubing quick-connect splice connections from your local hardware store and you can then add in some additional 1/4" tubing to move it further away from the sink. Just keep in mind that you have to be able to reach both the faucet and the filter unit at the same time. No on/off valve actually on the filter unit. This means that water will start flowing from the spout as soon as you pull the switch on the faucet adapter. So, you are left with two choices. Either you try to pull the switch with one hand while holding your cup under the spout with the other hand, or you use two hands to steady the faucet and pull the switch, then put your glass under the spout after it is already switched over and running. That second option is a waste of water, but it seems to be the easiest way to do it. It would have been nice if they put a valve actually on the unit so you could control when the water comes out. THE GOOD It clears up room in the sink! This was an advantage I did not foresee originally, but the other faucet mount systems invariably end up getting in the way of the usable sink space and are also difficult to use if you have any dirty dishes in the sink. This unit solves both of those problems. Because it is only attached to the faucet by a 1/4" hose, you can move it around to any position you want, so long as it is within the hose's range. The spout can also tilt and swivel. This unit has never gotten in the way of the sink's usable space and it has never been difficult to get a glass of filtered water, even with a sink full of dishes! Water tastes good. I know there are some folks on here complaining that this unit does not remove enough fluoride from the water. OK, I suppose that is a valid concern. In my case, I just wanted a home solution to get decent tasting water from my sink. The water that comes out of this unit tastes just as good as anything that might come in a plastic bottle, and I have a virtually endless supply of drinkable water without the plastic bottles. This is a win-win as far as I am concerned. If I ever get to a point of being more concerned about specific chemicals that I cannot taste, I suppose it will be time to just put the money into a real reverse-osmosis system. Great flow! As I mentioned before, I have exceptional water pressure in my home. When I first had the water turned on here, a weekend tech from the local water district came out to do it, and I think he may have opened up the valve to our place too far! I love the high water pressure, but I think that may be the thing that was killing our other tap-mount filters. This unit can handle the high water pressure with no problem, and it doesn't even seem to slow down the flow much. I can fill up a 12-cup coffee put in just a few seconds. Overall I am very happy with this system. If it had an on/off valve actually on the filter housing I would give it five stars.