I think the mids are more or less equal between the three IEMs. It really comes down to tonality and preference.@Smirk 24 so seems like you prefer the Mk3 to the Mk2 right? Using same Azla tips, the Mk3 doesnt bother you anymore? How about the mids between the two? Would you recommend selling the u12t and getting the MMk3 then?
Sorry for so many questions but your decriptions are ones of my favorites
Using the Azla Shorts, the MMK3 treble is lovely. I still maintain that the MMK2 has a better, less problematic treble overall but it's close.
I slightly prefer the MMK3 to the MMK2 but that's mostly because I find the MMK2 mid-bass to be soft and somewhat anemic (I fixed this with an aftermarket cable btw). If I was comparing just the mids and treble, I think they're about equal or the MMK2 takes the nod.
I don't recommend selling the U12t unless you're absolutely sure. The U12t resale value is about $1300-1400 USD which ends up being a big loss from its $2000 MSRP.
If you can demo the MMK3 I'd give that a try before making any final decisions. Don't let your curiosity get the best of you.