Hydroponic plants are often reported to be more flavorful and more tender than traditional field-grown produceSince hydroponic plants are grown in a protected environment, they are not exposed to the same kinds of stresses that can plague field-grown produce. This stress can not only cause problems with rot and other diseases, but can lead to bruising, toughened flesh, and flavor that edges toward bitter or lacks flavor altogether. Hydroponic produce doesn't have that problem.
Properly grown hydroponic vegetables should be neither bland nor have an artificial, chemical taste. Tomatoes that are vine ripened in ideal conditions should be sweeter and more flavorful. Melons provided with plenty of water have firm flesh and a rich sweet taste. Carrots are brightly colored and juicy, not overly fibrous. If your hydroponic setup allows carrots to be exposed to a few light frosts before harvest, they will be exceptionally sweet. Any changes in flavor for hydroponic plants should be a distinct improvement over mass-produced field grown produce.