The better ratio of price and performance?

Have the PearlCo UNIMAX water filter ordered as 6-pack to test a cheap alternative to the originals of MAXTRA Brita. To my slight surprise when unpacking it concerned with the well to offer a special distributors offer: six cartridges in the delivery package, NO BOX - but welded individually in the typical protector. Okay!
When activated the first cartridge I have gained the impression that these water filters could be conceptually processed slightly better than the OEM cartridges - at least, as far as this can be derived from the arrangement and number of filter openings.
The handling is no different from the BRITA-products; Pass accuracy is given. To filter performance so far I can not detect any deviation from the previously used cartridges. Neither in the filter jug, still in my kettles deposited more or less lime from than before. Therefore, at this point 5 star for the better price-performance ratio and did not appear inferior quality.