^^ You replied as I was editing my previous post.
Basically, I got a perfect fit with both SE530 & SE535 and I didn't find either of them nearly as good sounding as the W4, UM3X, TF10, CK100, IE8, UM2 or W3.
I haven't tried the Etys, so I cannot comment on them - they remain an IEM I've yet to try, but after so many reviews I've not yet been convinced to pull the trigger on them.
I also don't believe that more drivers is necessarily better, and the perfect example, for me at least, are the SE530, SE535 & SM3. I'd take the UM2 (dual-driver) & Super.fi 5 v2 (single-driver) over all 3 of them.
However, as good as the UM2 was - an IEM that's been highly praised, BTW - I've found the W4, UM3X, TF10 & CK100 better sounding. Yet, I prefer the dual-driver UM2 over the triple-driver W3.