OK, person at "Wunderbar" seemed to agree that the volume was low and replaced the phone. 2nd iPhone 6 Plus has better volume but no where near the "ear" speaker volume as my old 4S. Tested side by side. The speaker at bottom of phone is as before, could be loader but acceptable.
I really believe there is a design/software problem with this "ear" speaker volume.
Another interesting thing from the BAR visit is that while waiting (1hour) for my appointment I listened to the various conversations between the techs and customers with IPhone 6 issues. Almost every conversation started off with a diagnostic test and then telling the customer that several apps were crashing (sometimes over 20!) and that is causing the issue.
When my turn came the same thing, I had 13 apps crashing and that most likely was causing the audio issues. I did not buy it as I had this issue with a factory restart with no restore. I was also told not to restore from iTunes. Start over with the apps and all my contacts. Right! That would be easy... What is iTunes backup and restore for anyway.
Really not impressed with this 1st level "Wunderbar" support.
Oh yea, of course they had never heard any complaints of low volume with the IPhone 6 at all.....