I've had solid beers from Taxman.
Dave and I went to Byway once like 5 years ago, and left after trying a couple of samples. They were awful. Maybe they've gotten better, who knows.
Any opinions on these breweries at GTMW? 
Byway Brewing Co. | 506 | Hammond
Taxman Brewing Company | 917 | Bargersville
Can't say i've heard of either.
I'd check out Taxman for sure. They're pretty much omnipresent around Indy, specializing in Belgian styles. They really took off right when I stopped drinking, so not sure if it's any good, but it's everywhere around town. Even Target stocks several of their offerings, including sour stuff.
Managed to hit
Taxman for a couple, really liked Balance of Sour. Not many breweries attempt Oud Bruins, and this one was unique with some sour fruit and oak notes. Gin Barrel CiTRUST was too floral for me, but I think others (Sev) liked it.
Central State was very good, enjoyed the smoked sea salt gose and their dry-hopped wild ale was even better. Kind of surprised as i'd sworn off buying their cans after too many expensive duds.
New Oberfaltz had some of the better lagers of the fest. Helles was a repeat for me.