My Blessing 3 arrived a few days ago and I've been listening to a random selection of tracks, hopping from genre to genre but concentrating on tracks with which I'm very, very familiar.
My initial reaction to the stock eartips was the same as that of
@VSG. I had to line them up on my desk to identify the sizes. I went for the M-size, inserted them and — bingo! — a perfect fit.
My first impression of the Blessing 3 was that of clarity and space, especially clarity. I was able to identify layered instruments whereas before they'd sounded like only one. The same goes for layered vocals. I was delighted to find that I could decipher several mumbled lyrics that had bothered me for decades.
Soundstage is slightly wider than that of other IEMs in my collection.
Recently I've been alternating between my Letshuoer S12 and Truthear Zero Crinacle. It's too soon to compare those with the Blessing 3. I'll post again with a more considered review.