Hey! Well, even though I'm a big proponent of different preferences, choices and how every review should be treated as 1 data point in the larger scheme of things, I'm posting a reply just because you kinda implied that I did something unreasonable. You should know that as reviewers, we sometimes have to include stuff in our reviews with a larger picture in mind, the kinda stuff our readers generally ask for and the kind of questions we get in PMs after every review we publish. So, not everything is done in a direct sense.
Even though I didn't really want to, I merely included that comparison with a foresight of the number of requests I'd get to compare Phantom to MEST MK2 (MM2) mainly because they both are BCD quad-brid IEMs and MM2 is one of the most popular BCD quad-brids while being the closest one in pricing. It's not included in there to imply Phantom can level its performance or anything of that track but merely to show how these two have two different types of BCD drivers and implementation, and because there's no other BCD quad-brid around Phantom's price point. If you notice in my comparison, I only state what I hear and purposefully avoid including too much of my own personal preferences in order to keep it simple for the reader and leave the decision on him to decide what he'd like rather than I tell him what he would (which would be weird). Oh and I could've included other BCD quad-brids like Empire Legend EVO, Kinera Loki Emerald or UM MM too but didn't just because they get more and more expensive, which is why I limited it to only one BCD quad-brid comparison while the rest are popular IEMs in that segment, regardless of their driver config.
If pricing was the only reason to include IEMs in comparisons, I shouldn't have included MEST MK2 in Kinera Loki Emerald's review either considering Loki Emerald is almost twice its price. But again it was done just because I knew I would get those questions and it is something I thought most readers would like to read about to see how Loki Emerald does compared to one of the most popular BCD quad-brids.
Philosophically, pricing generally is no indication of performance. IMO, quite a few TOTL priced IEMs don't level Moondrop S8 or Symphonium Helios' tonal and technical performance in all or certain aspects but well, I digress.
Now I can see that MEST MK2 is more your jam and fits your preferences better, which is wonderful. It sure is one of the nicer IEMs in its price segment and one of the popular ones too.
But you see, more bass or a bigger bass shelf is not everyone's preference nor does it equal better bass. MEST MK2 does have a slightly bigger sub-bass shelf and images the bass more upfront due to its fuller signature, which is something you might prefer but not all might. I personally like my bass to be more in its place and go deeper into the stage, which is why I like Phantom's presentation more in this case even though I don't state my personal choice in the comparison purposefully.
Also, detail retrieval is quite a tricky thing because brighter (sparklier, sizzlier and airier) treble tuning can trick us into perceiving more detail just because it's like shining a big bright spotlight on everything. So, what I personally like to do is try and write about the individual IEM's technical capabilities as per its tuning. Otherwise tuning can greatly influence perception of some aspects of technical performance and I'd be claiming all the bright IEMs to have the best detail retrieval, be it a $200 one, while they might not be for everyone, especially the treble sensitive, which was kinda the case with MEST IEMs too. The treble sensitive complained of it being bright even though I personally was fine with its treble.
Now when you compare MEST MK2 and Phantom back to back, the mere brightness of MEST MK2's treble can make Phantom's treble sound lesser in quantity in comparison, 'muffled' in your case (which I don't agree with) but you got to realise that MEST MK2 has north of neutral treble boosting while Phantom is sparkly with its lower-treble but warmer with its upper-treble tuning. Again, choice here will depend on how one likes his treble served. I'd probably pick the MEST MK2 when I'm in a mood for a vibrant signature but not everyone might and neither would I every day. On the other hand, I personally dig Phantom for its more accurate ear gain because I personally like a more neutral ear gain peak, about 9dB of it as you can see in my
Animagus Preference and Neutral Targets, something I personally value quite a lot for tonality of instruments as an musician/audio engineer.
All this is why we at Twister6, I as well as Alex (
@twister6 ), mostly try to write what we hear in our reviews and leave the decision on the readers to decide if something's for them or not. In fact, I sometimes try and put in some of my personal preferences more than Alex does, who goes for an even more neutral approach.

Plus the graphs are in there to back what we hear and for our readers to see and not take our written word as gospel.
I can't comment on its resale value but if it's not for you, put it up on Head-fi Classifieds. You never know, you might get takers right away. Buying blind without trying or without many reviews is always a risk. In fact, you tend to lose even more money as you go up the price segments or if you try and sell once the hype has died down and it's not the flavour of the month anymore. People lose significant money even on popular TOTL IEMs like Trailli, Jewel and the likes. Even most U12ts generally go for around $1200 or lesser in the used market even though they are one of the most popular, critically acclaimed IEMs. That's a $800 loss on MRP of $2000. Just saying...
Hope this explains my inclusion of that comparison in detail. Haha!

Cheers and happy listening!