Sorry about the late post on this thread. I have just discovered it and boy, do I have things to say on this subject..
First off, welcome to the forum..
My background is that I come from a Hungarian family that has been grape growing and wine making commercially in Europe for 10 generations. I, myself, have been making wine for over 25 years.
I have to admit that I am a big fan of those classic chards and cabernets coming out of Napa, and am also a huge fan of classic French, Italian, and Spanish wines. I would also mention Hungarian wines, but the more classic, high quality wines do not really ever hit the US.
My tastes are driven from big, bold reds to the more soft "bouquet of flavor" that is a well made pinot noir.
All of my wines were made from "square two", starting with whole, fresh, high quality grapes.. (I say square two since I do not actually grow the grapes myself).
My wines seem popular to those that have tasted them. I have entered and won many awards in amateur competitions. One award even came with a free trip to Napa valley.
I say all of this not to brag or be snooty. There are many others here on this sight that are on a much higher plateau than myself.
Back in 1992, I attempted my first kit. It was cheap and really only contained a can of juice concentrate and a book of instructions. This wine turned out like garbage and I simply walked away from kits thinking that kits could NEVER produce the same quality as a wine made from whole fruit. Over the years I became rather smug about it.
Over time, kits have evolved and kit wines have been getting better and better. In the last 10 years, I have seen kit wines go from their own, separate category in competitions, to actually competing "head to head" with wines that have been made from fruit. Stubbornly, I hung on to the idea that kit wine could never be better.
Then Joeswine (a member on this site) sent me a 375l bottle of his San Giovese (SG)....
SG is a grape native to the Tuscany region of Italy. This grape produces what is arguably some of the finest wines in the world. .
This wine was spectacular! Solid, beautiful color, the right amount of oak that had just the right body and flavor. This was from a kit! I have been drinking wines from fresh fruit my whole life and this wine would have definitely fooled me.
In short, YES, you can produce a kit wine that is shockingly good! You just need to know that (much like purchasing grapes) the more expensive tends to be more quality.