Gizze, don't try to argument with Moxxey about what is important, I think we all agree that we have to have a "coherent" ensemble from source to speakers, the speakers being the area where you have to spend the more money!
I also think that the AE outputs a "restricted" sound compared to Sonos or B&O stuff : more bass, less depth, less "air" between instruments, less clarity.
Moxxey spent posts to say that source isn't important on an other thread, and that I was crazy to buy 24-bit songs because the difference with CD-quality files "can't not be heard on my BL3s, without even trying to listen to any of those files, because "airport express is better"... And on an other thread, I found him saying that Blu Rays have far better audio than DVDs and are worth buying for that reason... And what is one of the main difference between BD and DVD??? They have 24-bit audio!!! 😁
I just think that some things like DAC, 24bit or compressed/lossless audio files are just things that are still a bit new/complicated for some...
So the conclusion is : don't listen to somebody saying something about sound quality, just listen to your setup, and if it's fine for you, then why bother?