I entered three wines (made from grapes) this past year in four separate competitions. I tried to avoid those competitions that were heavily sponsored by the wine kit manufacturers.
Competitions entered were one in Ct. one in NJ and two in Missouri.
2011 Sangiovese, 2010 Super Tuscan and 2011 Petite Syrah. The 2011 Sangiovese was my favorite followed by the Super Tuscan ( a little too fruit forward for my liking) and the Petite Syrah was Ok but there was something about it that was off and I could not put my finger on it. The Petite Syrah was entered primarily to get feedback.
The 2011 Sangiovese received a Gold, two Silvers and a Bronze. Super Tuscan received two golds and two silvers. Petite Syrah did not medal in any of the competitions. However, in one competition it received a 17.5 out of 20 from one judge.
Most all judges were in line with what I felt about the wines but as Seth said above no real feedback on what the problem was and how to correct on my Petite Syrah. Except for one judge that took the time to write several comments on her thoughts on my Petite Syrah and how she would correct the problem.
I found my best feedback came from bringing the wine to one of the award dinners. Every one there was an avid wine maker and had no problems giving me ideas.