Haha nice to see another fan of them. Have you heard of Fit For A King? I love them as much as TDWP and Phinehas. They’re putting out a new album in like 7 days ( 
Reaper goes hard ).
Yeah so far I’m not sure whether I’ll be keeping the Olina SE, which sucks. Cause the more I use them, the more I love their comfort, fit and build, nothing beats them in that. It makes me wanna try modding them to see if that can help, cause outside of bass they are a pretty great set. Another set that I’ve been liking so far is the FiiO FH3. They have that bass, but don’t sacrifice the mids for it. Kind of torn between the two of them at the moment.
I got a couple IEMs to see which one would fit my tastes the best when compared to the Olina SE in this post. Might give you some info on some potential good IEMs. 