Received the TRUEGIRP PRO SM-LG (3-pack) for the Sony® WF-1000XM4 earbuds. So far these have the best retention and fit thus far with minimal adjustment. For reference, I have fairly small and narrow ear canals. Bought the varied 3-pack just in case there were different fits for each ear. I initially have tried an amazon off-brand foam tip, but found it to more hard-foam than memory foam which was quite uncomfortable and fell out often. Soon after, I switched to the SpinFit CP360s (silicon tips) due to the online hype which was ok, more comfortable than standard included tips, but over long periods of time (or long flights) the silicon tips became a bit sweaty and uncomfortable. Had to adjust them often due to slippage.
The TRUEGRIP PRO seems to have hit the spot for now. Initial setup in each ear is quite fast as the memory foam expands quickly. I ended up just utilizing the small tips and over a 5-hour period only had to adjust them once due to minimal discomfort and a bit of moisture that was barely noticeable, but was easily remedied for extended use and almost forgot I had earbuds in hours after. No issues with interruption in charging when placed in the charging case, retention so far is excellent, and sound isolation seems to have improved over the latter.