I figured I'd bump up this thread with an update. For reference, the car is 100% stock.
After that post 2 years ago, I got these tires put on my daily driver mazda 3s, in 205/55/16, which is the stock factory tire size. So far I put 27k on the tires, they probably have another 8k miles left in them
However, the problems... once I rotated front to back, I got severe road noise between 45-70mph in the front. Tires have been rebalanced several times, alignment's fine (was slightly off in the front, not enough to cause a problem, and rear was fine). Several america tire locations said it was cupping due to suspension travel (car's bone stock, shocks are good)
I figured it'd wear in, drove a few thousand miles, rotated the tires to see if the issue would go away.... nope, now it's present on all 4! I'm lost, and at this point, next set of tires won't be directional.