Usually Srixon AD 333 that I bought in bulk a few years back. Last two rounds, tried the 3up Golf 2S14 after hearing about it on pga radio. When my 333s run out, I'd definitely consider these as a replacement.
It doesn't bother me either way, I actually like music playing, but can see why some would not. On our annual buddies trip, I have music playing about 1/2 of the time we are on the course, and it's loud enough for those within a few paces of my phone to hear.