SM3 is just like every other IEM. Some like it, some hate it.
I don't have any fit issues (with stock bi-flanges, Shure Olives) and I've not tried to EQ / Mod them. Bass does not have the very lows, treble is slightly recessed, the presentation becomes unnatural especially with live performances where it envelops your head rather than present a stage. Every listening session with SM3 goes something like this - denial, acceptance and appreciation of it's sound signature. Strangely, I don't feel the treble 'recessed' at the end. It's like an invisible voodoo driver acting on me half way through.
I don't have such issues with DBA-02. I plug and forget. At odd times, when coming from something like a FX700, it takes me a couple of minutes to adjust. But, it never needs a brain burn-in / adjustment like SM3. I've had SM3 for less than a week, so I am stretching things here - If you accept SM3's way of presentation, 10/10 does not look out of place; if not, it looks a bit charitable for the 'flaws' it has. Just my 2c.