The Brews Best festival is a personal favorite since it is the first beer festival that I attended. Several beer fests, lost/broken sunglasses, torn articles of clothing, lost jewelry and one boxing lesson later, it's still a blast.
The venue is what makes this so special. The festival is held twice a year, once in March and once in November. The one in March always has great weather that makes spending the day by the lake pleasant. The beer selection is good, however it stays pretty consistent. There are new breweries making appearances every now and then, but for the most part you'll see the same people at each festival. That is not a bad thing, since I still enjoy going, and you should too.