Best water filters?

Looking for some advice or maybe a reality check here. A few days ago, we bought one of those water filtration systems from an American company—I won't even name them, probably better that way (?). A sales rep came over and gave this "amazing" presentation, showing off how much junk is in our tap water versus how "pure" it becomes after running through their filter... The price tag was no joke—$2.00—and don't even get me started on the monthly installments...
So, here’s the deal: the unit hooks up to our standard home plumbing and supposedly runs the water through five different stages (they claim they're just mechanical filters) to strip everything out until the water doesn't even conduct electricity anymore (yeah, I know about electrolysis and all that). My actual question is—is this thing basically turning our water into distilled water? It tastes a little acidic to me... 🤷 If it's stripping out all the metals and whatever else is in the pipes, is it also stripping out the good stuff? And if so, is this even "healthy" water to drink?
My wife, of course, insists it's perfect—but hey, she's the one who lives on this stuff.
If anyone knows anything about these types of filters or actually uses one at home, please let me know... did we just get screwed? I know it might be too late since we already signed the contract, but I'd still like to know what we're dealing with.
Thanks!

Considering how much cash you guys dropped, I’d say you basically threw it down the drain 👎

If there is no electrical conductivity present, you are looking at nothing more than pure distilled water, essentially just plain H2O.
The idea that this is somehow superior is nothing more than a marketing gimmick and quite frankly an absurdity, given that the human body fundamentally requires the minerals found in water to sustain life and essential biological functions.

I attended a presentation on this subject and brought Jan along with me—since I work in this field professionally—and the results were absolutely indistinguishable from standard municipal tap water.

We have a Brita pitcher here at home. I can't seem to track down the official product brochure right now, but if I recall correctly, it stated that the system allows essential minerals like sodium to pass through to the body. At the same time, it filters out limescale, discoloration, mercury, pesticides, and various other impurities. It handles quite a bit.

Sure....
The machine itself might be high quality... but if it doesn't include a water alkalizer, you might as well toss it straight into the trash.
Acidic water is pure poison for your organs. It kills people. Plain and simple.
For that kind of money, you could get a solid GE alkalizer, and there are plenty of service centers right here in Chicago to handle it.
An alkalizer splits the water into acidic and alkaline (basic) streams.
It usually comes with two spigots—one for each type.
When you turn the water on, it flows through both. You drink the alkaline stuff, and you use the acidic water just to wash your hands, because using it on your skin strips away your body's natural defense against aerobic bacteria...
That’s the gist of it.

Thanks for the input—just wanted to wrap this up. We ended up returning the filter and everything else...🙂
My wife actually gave us a full refund. After doing some digging and reading through your comments, we decided the water was just too "over-processed" to actually drink. She tried to argue against it, obviously, but we figured it’s not worth dropping that kind of cash on something you're ultimately going to be afraid to use... plus, they end up drilling holes in your favorite sink by the way.😉