I could be wrong but I think that what often "turns people on" to heirlooms is that the first one they try is a tomato with a different color than what they have had before.
We know that different vitamins are associated with different plant pigments. I have come to believe that different flavors are associated with different colors. It is hard to qualify flavor. Saying, "that tastes yellow" sounds like an 8 year old who knows Kool aid and not much else.
Still, I have come to think that there is a "yellow tomato" flavor. The more "orange" it is, the more pronounced the flavor. It may or may not be very sweet.
I have yet to eat a strongly-flavored "pink." I don't know if there is a "pink tomato" flavor, just that they are mild. The one "white" that I have grown was, not surprisingly, very mild.
Like or don't like, that is all a matter of personal taste!
Steve