I got my Blessing 3s yesterday afternoon. Here are some very amateurish initial impressions. I had a listen to Motets etc. by Lupi and Hellinck sung by the Brabant Ensemble (Hyperion) and could hear nothing objectionable. My general principle is that if it isn't making the music sound bad, it can't be all bad itself.
I attached one of my Blessing 2s and listened to it alongside the Blessing 3. Whatever the differences between them are, I couldn't detect anything from my mix-and-match experiment.
The stock cable feels less premium than the Blessing 2's stock cable. The hard case with its hard top also feels less premium than the Blessing 2's case with its padded top.
If you have the Blessing 2s, I'd say I'd say it'd be better for newcomers to the Moondrop market to acquire the Blessing 3s.
Here's my additional 2cents:
- The cable is... quite good and compliments the B3. It is lighter and more portable and less microphonic. Previously it was pure copper and now it is some type of silver-plated copper. Apparently work was done to match the impedence exactly to the new Blessing 3... as I ran into difficulty despite having 10+ cables lying around. Most other cables would add mid-bass which makes a little bit of vocals to 'leak' to the isobaric drivers? (This is purely from my ears and I have zero testing equipment to prove anything, hahaha.). So from a pure guessing perspective, the cable helps to keep the iem to sound clean. Cable rolling is not necessarily an upgrade. It's a fun audiophile activity but after an hour of A-Bing I just fell back to the stock. The vocals are central-stage with the stock and the bass is most consolidated.
- You can make your own B3
usk by just adding 1-2 dBs to 60-200hz, and maybe -1 db from 3k-8k to take the splash to an acceptable level. I find it is able to take on EQ with grace and the new bass drivers on B3 is more capable than Dusk. The extra control doing solids for bass response. Decay control is actually this version's highlight. I could even put on 5 dB and have a nice moment.
- The annoying thing is I've complained about the treble peaks and they are still here. In Dusk, it was hidden in a bass shelf (consequently making a 'fun' iem). When it is unveiled again this time with B3, I can't help but feel a disagreement with the tuning. IMO, the problem wasn't the bass shelf but rather it was used a solution to cover up trebles. Now in the iem world it's all about balance and sometimes the-least-offensive-wins (in some cases, like the U12T / Dunu SA6 / Andromeda). Those three are very safe and perhaps some would consider way too boring for audiophiles. People have sold their U12Ts citing "the most boring iem I've ever heard". But for some people, that those IEMs win is because it plays through anybody's playlists on random, and without being offensive in the process. If a fun fun showcase of trebles is desired, I think very much that at least an EST is needed. It should sparkle and highlight trebles, but do not overemphasize the high energy hiss and tiss at the 2k-6k regions.
- I do wish to have a version with 4 mids-BA like the S8 and an EST like Variations. But then again, such a product is going to incur much higher cost and the ultimate price will be higher. I agree that B2 / Dusk owners maybe better off waiting for a refresh to S8/Variations.
Now all in all, the B3 is still very nice with the upgrade in resolution and bass.
. I also thought about SeeAudio Yume 2, but man, Blessing is so beautiful 
