I favor the large tips too. But don’t use the fins. Just make sure I seat them well. I may turn off the touch function, i use my iphone for volume and track skip etc.
Much more comfortable with fins off. After listening to music, I'm definitely sending the Sennheiser cx400bt back. If the Senns were more comfortable and had ambient mode, I would have kept them. Sony and Touch sound 95% just as good, are 10x more comfortable and have more features for similar cost.
I will have until monday to decide between Sony and Touch. I want to try Touch for couple days to see how good the connection stays. So far, they have worked without a problem but keeping my fingers crossed. Only issue I noticed so far is when I switched to AAC to test that versus aptx. Only 1 earbud turned on so I had sound on 1 side only. I switched back to aptx and suddenly had sound on both sides. I tried switching back & forth 3 times to test and am unable to replicate it even with AAC on.
I noted an interesting comment on different forums btw - perhaps connection issue could be affected by the phone?? I use Google Pixel 3 with latest android 11. Perhaps some phones have certain compatibility issues or older android version? I don't know about iOS so can't comment on iOS.