The first time I checked a bar code on my 18L jug it came up fake. I emailed Aquasana that day and bought an under the counter filter. I have never regretted it. I think if you're planning to be here for a while, it's a worthwhile investment.
When I moved, the guys at Aquasana came to my new place and reinstalled the filter, and were even able to drill the hole in my sink. This was a free service visit. I have found them to be very professional.
Several months after I got the drinking water filter, I bought a shower filter, and have also been happy with that purchase. My skin and hair fare so much better in the harsh winter with cleaner water.