Bmd, I have made wine for many, many years and in all of those years I have only dumped 2 carboys of wine because they were undrinkable and not even good enough to make into vinegar. Both were FWK Chardonnays, one without the "carbon fix" and one with the "carbon fix." I have not and will not try any other FWK whites. It is my view that there is something in the process that they use for their white wine which requires a remedy (charcoal) to overcome.
Further, making "kit" whites does not, in my opinion, produce as good a white as buckets of juice, widely available in my area in both Spring (from South America, South Africa and Australia) and Fall (from California and Europe). In addition, making wine from juice buckets seems easier to me. Lastly, buckets of juice are very close to the production process used by the majority of wineries, i.e. crush, destem and separate the juice from the skins immediately then into fermentation tanks.
I do, however, agree that the FWK reds are very good wines and the equal of the best kits I have ever made.