Not sure on what the rules are on necro threads but I can see some talk about the wf-1000XM4 and tips.
For me the Sony tips are in a world of their own being a hybrid silicon covered memory foam. I have small canals so the small size is exactly what I need. If you wear them out you can contact Sony Central Service and order new ones, was £5 a pair + £2.50 postage. Expensive so I'm taking better care of them now but I also ordered 3.
I also bought some sonicfoam tips to try out, fairly cheap and all in all a good replacement as they are memory foam like the Sony tips, but their small size was as big as the Sony medium tips which was a no deal for me. Otherwise I would have stuck with a 3rd party tip manufacturer.
From my perspective some general advise about true wireless iems:
Audio is obviously going to be a priority but you can only expect so much as there will be (even with ANC) a lot of background noise for your use case, this should be on par with or maybe a little less of a priority to feature set and battery life. For me the 8 hours on time (24hrs total) with fast charging, great ANC, speak to chat and other features put the Sony at number 1. I need something that I can have on from 6:30am till 1-2pm when I have lunch to cut out the commute and office, that will charge in just over 1 hour and be good for the rest of the day and commute home which is about 4 hours.
For someone with a short or quiet commute that doesn't need to use them for a noisy office or that may not require as many features other options might be a better fit and give you as good an experience as some of the top brands will at a fraction of the price to boot.
