Currently owning : Beoplay H6 first gen. Like it? As an outdoor headphone - yes. As an audiophile product not much. I cant sell it off as it was gifted by my wife

back then i liked it a lot as it was blown away by its details, then slowly I started finding flaws. But i think using it 4 years
I think the one i enjoyed thr most was the HD 650.
With iems I am also into chifi. I too have the blon and tin and they both are great. They are well built than brands like shure (se215)and klipsch (s4i)i previously had. I changed the cable of both to Make them faster (clearer, apparently as temporal masking is less then) a bit though.
The good thing is I can use them without caring too much as they did not cost much. Both of mine have taken hell lot beating already !