Under the sink water filter

[LoraMoser]

We will be replacing our kitchen sink in the near future. Currently, we use a faucet filter but are considering an under the sink filter (the activated charcoal type, not reverse osmosis) which I assume in general would be an improvement over what we currently use as the filter cartridges are bigger. Some of these filters only advertise removal of sediment, etc. and seem geared to improving taste and/or are meant for commercial use. I'm interested in one that removes most common contaminants. Of course, a search has uncovered a bewildering array of options so I would appreciate hearing about your experience and recommendations. As there are usually only two of us in the house, cost of cartridges is not as big a factor as it might otherwise be - I'm mainly interested in reliability and effectiveness. Thanks.