Strictly for music production, the only Westone I would use is ES60. Otherwise you want something neutral so you don't adjust the mastering EQ to correct for the sound sig of your IEM or full size. M50x is too bassy, not good for music production, but rather for monitoring or mixing. I also reviewed M70x - horrible for listening, too flat, but some people like it for mixing and production because it's dead flat and bland. I have all of them reviewed here.
With my current review queue, i'm booked for the next 2-3 months solid. So, will ping AT a little bit later. Otherwise, lets get back to UM Pro and W-series discussion since this is Westone thread
Hey twister6, I love and really enjoyed your reviews and one of them nearly got me to grab a pair of Westone. However, it seems that you are on the edge of having biased towards Westone TOTLs and against AT based on the ones you reviewed. Please reserve your judgement until you have fully experienced the E70, I am not saying those are the better but they are definitely many miles ahead of what you mentioned (m50x, m70x, IM03 or even the much loved MSR7) and above all (like many confirmed) have a very non- AT sound signature
P/S: Similar to you, I wont EQ in any case to get the most original sound of a pair of IEMs or cans that manufacturers want us to hear.
Of course, I wouldn't even dare to judge E70 before taking a listen to it. I was just expressing an opinion based on my previous experience which made me a bit skeptical. Keep in mind, I'm as much Westone fanboy as I'm Audio-Technica and at least a dozen of other brand names