Overall, I am satisfied, I don't have much knowledge on the subject but I don't notice any strange taste or smell in the water nor are there any residues. The water pressure remains very good, better compared to the previous filter.

The aforementioned filter replaced the Dulton Ultracarb. So far (one month of use), I am extremely satisfied. The sensory characteristics of the water it produces are excellent. Much better than the previous Doulton. Superior to all bottled waters. Additionally, the pressure drop is practically zero. Something exceptional for areas with low network pressure (like here in Mesolongi, especially in the summer). Of course, I should note that the city water is generally good and without any particular problems except for the chlorine taste and odor.

Update 9/9/2023.
Fourth purchase of the aforementioned filter (in 2 different houses). By also purchasing the Cyl and SD+ from the same manufacturer (American carbon block), I concluded that the VOC is the best in terms of water taste. I change it preventively once a year, although it remains excellent until the last day. Annual filtration > 10,000 liters since cooking and washing vegetables and food are done exclusively with it.