I ended up mistaking mine for the life dot 2 NC. I actually have the A2 NC. But, I am pretty sure they are close to the same in terms of design. I did have to get a bigger sized silicone ear tip (XL). That took care of the seal issue, and fit. With the wing tips, I use the large. But the trick is, when you put them in your ear, you have to twist them down so that wing fits in the fold of your ear and the microphones are pointing down. I think there is a picture of how to do that in the instruction manual (I am guilty of not looking at that until awhile later). I run 3 miles every few days, and these things don’t move now. I’m confident I could do flips or even 90s style heavy metal headbang and these things wouldn’t fall out.
With the ANC/ambient… I’m with you. I wish they were a little stronger. I don’t have a ton of use for the actual ANC, but I use the ambient constantly between running and then having 2 kids at home and working during Covid times. I need to be aware of my surroundings at all time. I can’t have a conversation or really hear anyone talking if my music volume is slightly up. BUT, when I run and have higher volume, I can hear cars approaching. So it does what it is supposed to. I have seen stronger ones where you can actually have a conversation and hear people, namely the Life Q30’s.
Overall, I’m still happy with them, but like you, wish they were stronger in the ANC/ambient department. Indo have a pair of Life Q30’s, and those are PERFECT (to me) with the ANC/ambient. I use those when I work at home. Unfortunately, they are big and bulky and you cannot work out or run with them.