If i push them hard in my ears and seal it 100%, i lose sound. does this make sense? it feels like they are so sealed and or in my ear that they are blocking noise, it is so hard to explain but it isn't a good feeling because it feels congested.
Mine do fell a little fuller(bigger in size) in my right ear when I first put them in and this has nothing to with the seal. After a they get seated I don't have that sensation any longer and kinda forget they are there.
I think if you have a comfortable fit ( ears not paining at any spots), getting good bass response with them vibrating your bones some, you have a good fit.
Yeah, yeah, I've had those canal phones with the different tips that gave you isolation like you had both fingers stuck hard in your ears, but those usually would not stay seated long. I think it's apples and oranges as customs are there own animal.