I have been using a pair of Westone dual driver molded IEMs for many years, but it's now time to replace them. I am zeroing in on three products and am looking for advice from the TB community. Ultimate Ears UE 11 Pro 64Audio A4t or A6t Westone ES60 These all seem like great options. At the moment, the 64Audio A6t is in the lead based on advice from a national touring act I know and a knowledgeable friend at church who has them. 64Audio also has a model designed specifically for Nathan East who is one of my favorite players. His signature series costs a bit more than I want to spend, but these two endorsements are pushing 64Audio to the top.