Pros: Great tasting filtered water, filter change indicators, shower/stream/filtered water selection switch.
Cons: You can't use hot water in the filtered mode.
I had seen this Brita On Tap filter at the grocery store, I was going to buy it until I saw the $43 Canadian price tag, I was expecting around $20-25. I then came back home and read reviews about it right here on Epinions. They looked very positive, so I decided to buy the Brita black & Chrome On Tap filter.
I "broke in" the filter as directed by letting water run for 5 minutes, then filled up a glass to taste, nothing impressive... until I then filled a glass of unfiltered water to compare, I spat it out before I swallowed any and thought "yuck! this is what I've been drinking all this time?", to give you an idea, it felt like drinking pool water in comparison to the filtered water. I hadn't realized how bad the tap water tasted until I actually had filtered water to compare it to. The difference in taste is definitely noticeable.
An extra bonus I didn't originally know was included is a switch not only to select filtered or unfiltered water, but also to select an unfiltered shower spray that definitely helps to wash dishes as the small jets pack a lot more punch than the normal stream so it helps remove dirt.
It also comes with a couple of adapters in case your current faucet doesn't have the required threads. Although we already had the correct adapter, I removed our current rusted one and replaced it with the same but new one included with the filter.
Update: One "con" I noticed is that the instructions say to not run hot water in the filtered mode, I usually fill the kettle with hot water so it takes only seconds to boil rather than 5-6 minutes as it does now since I can't use hot water (the manual says the max. temp. for filtered mode is 38*c).
I would recommend one of these to everyone.
Another update: I am already getting a red signal (that means 20 gallons/2 weeks left, whichever comes first) after about 20 days, I was expecting at least 2 months (filter life is 4 months or 100 gallons, whichever comes first, the later obviously in my case), but I must admit I used it a LOT daily for tea, cooking, etc. I still think it's well worth the cost of about 15 cents per gallon of filtered water which is WAY cheaper than bottled water, but I will try to limit my use a bit, I expected it to last longer.
Again, another update: My second cartridge lasted about 2 months, much more reasonable than about 1 month for the first cartridge, maybe I was overusing it when it was new because I liked it so much and I still do, I couldn't live without it, I now see tap water almost as sewage water, the chlorine smell of the tap water is pretty disturbing, what's more disturbing is that I had never really noticed this chlorine smell until I could compare the unfiltered water's smell to filtered water's smell, the difference in smell is very significant at least with our water. One other small con is that water flow gradually decreases over the life of the filter and gets pretty weak once the red light starts flashing (meaning 2 weeks or 20 gallons left, whichever comes first), you don't really notice this much until you replace your finished cartridge with a new one, I would say the water flow is 3-5 times less when it gets to the very end of it's life, but this depends on your tap water's quality. Of course, you can change the filter before getting the red light or before the "change filter now" signal if the water flow is too slow and bothers you, but I don't mind waiting longer to fill up pots or other large containers. If you do change the filter before the red light, make sure to read the instructions on how to reset the internal computer to zero otherwise it may think it's still the old cartridge and continue calculating from the old cartridge's usage.
Inside the filter: I saw the "Before & After" photos on the box showing the first layer in the filter which is white and then turns gray. I decided to open the finished cartridge and see if it really does change color. I took a hammer and it took at least 10 big hits before it broke... before the hammer broke that is! I then took a big heavy axe and it was at least another 15 big hits before it made a small crack which I could pry open with a screw driver, my final findings are that the first filter layer does change to a yellow/brown color, and that the filter casing is made of bullet proof plastic (no idea why they built it so strong), the filter itself is very well made inside and not a single drop can escape without going through the filter unlike with carbon pellet filters (this brita filter uses a hard round block of highly compressed carbon).