If there's going to be a WF-1000XM6 I'd like to know what they're going to do about fit. Sony claim to have analysed 1000s of ear shapes every time they release a new pair of earbuds so why is every pair different in shape? I was lucky enough to have a faulty pair of XM4s replaced with the XM5s but the fit for my ears is horrible. I've tried multiple different tips but can't find any that make me feel like I don't need to keep pushing them in every few minutes when walking and the polyurethane tips are a pain to clean every time you remove them. The latest 700s have a much better fit but I miss the extra detail in sound that the XM5s provide. I also think the question about battery life is very user specific. How many people actually use they're earbuds for over 5 hours at a time?