Hey Sebastien, nice seeing you on this thread
I actually tried the Solaris 2020 last week and compared to MEST. The Solaris 2020 is not as diffuse and "crisp" as the OG, but I think tonally it's an overall improvement, at the expense of technicalities. It's hard to say which is better from memory (owned OG until February 2020, and a 10 min test of Solaris 2020).
Now compared to the MEST, I think the UM is the superior iem on immediate listen, but the Solaris 2020 is a more smooth and warm iem with a more forgiving nature and richer midbass. Where the solaris wins is older/ poorer recordings, male vocals and perhaps a more consistent imaging.
MEST to me has it beat in holography, air, slam, transparency and dynamics. Tonally, Solaris is better, but with the right tips and source, MEST is right up there too.
For you to discover!
I would agree with a lot of what you say here. Let me start by saying that I LOVE the MEST-- It's been in my ears for days straight. Out of the IEMs I've owned the MEST overall sound combines elements of the Z1r, Solaris and Anole VX, along with some secret sauce of its own. There is definitely a portion of my collection where it just blows the Solaris out of the water (yes I can admit that) however for me personally it's a little too v-shaped for my liking as a single all-rounder IEM. For every track that the MEST flexes its strength there is another where I appreciate the Solaris' more organic sounding and forward midrange. I if I were to walk into a store and demo the two IEMs cold there is a good chance I'd probably leave with the MEST over the Solaris however having had the Solaris for the better part of two years (and having come back to it on one occasion) my own opinion is that its sheer versatility as an "all rounder" is hard to beat and for my tastes I would personally edge it slightly over the MEST. That being said I can imagine there are many for whom the MEST is unquestionably the better choice...so, like so many other things, it's a YMMV situation.
I would also agree that sources/tips do come into play. Out of my gear the Solaris sounds best with Spiral ++ tips through the PAW S1 (whose blacker background and reduced glare bring Solaris' overall technicalities much closer to that of the MEST), and the MEST through my n6ii with OG Sedna tips. Comparing them head to head like this (with each at their best) it's a lot harder for me to pick a favorite.
Thank you guys for this! I appreciate it and it's a great preface for me. Paid for overnight shipping since I couldn't wait LOL.
How is the fit vs the Solaris generally speaking? The Solaris fits me comfortably for the most part with the exception of the longer ends of the shell.
I'm luckily a part of big ear gang, so haven't has as many fit issues as many. If the MEST seals deeper and is more comfortable, that will be a huge win as well.
I'll drop honeymoon stage impressions tomorrow night after a few hours with them!