I got myself a set of the Michelin Pilot Sports for the summertime. I found that they were quieter and more comfortable than the OEMs that were on there. They had a good comfort/noise score on TireRack.com
I'm picking up a new ST on tomorrow, and they said I should wait to see if there are symptoms.
I bought another Edge ST two months ago, but it was totalled in an accident. I didn't notice any flares, but then again, I only had it for two months.