Mr. Rockwell, Mr. TjFont, and Mr. Chiu,
I have indeed been loving these, at home and on the go, walking, and during daily subway trips. Using them right now as I type. With the Xelastec and the Sedna Lites, they do indeed seal off a lot of the world outside, without hurting their sound (both do sound slightly different, but definitely a better sound balance than the Final E tips *for this particular IEM*, to my taste.) I find the large size stock silicon to work great ("best sound"-deep, clear, and natural) but its cons will be there, especially on the go (a bit worse isolation, soft silicon may ocassionally shift position, bass quantity mildly affected-will not become bass-light, however.)
With the usual caveats that graphs don't tell the whole story, if you have both the Honeydew and Dorado 2020, you may not "need" the Mammoth. If you had all the money to spend, it is more a "hifi", balanced IEM with the emphasis on the lows than a very bassy earphone. So will hear that bassy heft and emphasis over the mids and highs, but no bloat. The mids and highs are however tuned in such a way that even someone who loves mids and treble-like myself-can thoroughly enjoy them. So-called "energy", and "w signature". Still, I hear the violins the way they do sound in real life, both on stage and under the ear. There are many more "correct sounding" IEMs and headphones for sure, but the Mammoth can sound positively beautiful and atmospheric, without destroying the original recording. And of course they rule the bassier tracks.
Since you already own the Dorado, Mr. Rockwell, the Mammoth will be a variant on what you have. A bit more mids, and differently emphasized highs. The Dorado appears bassier, though the bass found on the Mammoth is of stupendous, realistic quality. Sadly I do not have your Dorado and cannot compare them side by side, but a few people do, and I also wish they posted their impressions here so they could help out more. I am personally satisfied with my Mammoth to the point they are my "bassy" IEMs, and am probably not looking in that direction anymore (that said, remember I am not a basshead.) I am sure the Dorado does likely sound great, and at least in theory I *love* the 8khz treble emphasis as I usually do. I would be more wary of its mids, but they may sound good to you already in real life experience.
Like with Mr. Chiu, I am still in "honeymoon" phase, but I expect my opinion not to shift very much. These are unique in my collection, and no other IEM or headphone *I have* surpasses them in their bass tonality. The biocellulose DD they used works so well for the whole musical balance and tonality. A basshead IEM that non-bassheads could love.
Take care all, and as always, feel free to disagree with me. Enjoy your music.