If you're in Louisville, just skip the rest of the breweries here and go directly to Monnik Beer Company. Its the Louisville location of The Beer Engine from Danville, and IMO, it is the best in the city and they keep destroying every one of my "I hate this kind of beer" stereotypes.
Not a fan of Saisons, but their Eagle Claw is one I will order over and over. Not a fan of anything using Brettanomyces yeast, but their Spacekataz (collaboration with Ethereal, or so I overheard the bartender tell someone else) farmhouse IPA is great. Their IPA, my go to style, is one of the best I have had from any Kentucky brewery.
I've had at least a dozen of their brews since they opened, and not a single one has been bad. Excellent food too.
Third Turn in JTown is starting to ramp up their brewing as well, and they are doing good things. The pub is pretty cool to visit too - its in an old church built in 1878, and they left all the original woodwork and stained glass in place. 20 taps, 3-4 of theirs, and the rest are a constantly rotating mix of locals and other craft beers. Smaller brewing system, so the house brews are always changing.