Did you buy your m22? If so, you're a preorder customer and will get your upgrade parts with all the other preorders. I got mine early as an 'official' tester.
As for 'vapor standards', it's a matter of prefs I suppose. My experience thus far is that the ESCC greatly outperforms all the buckets I've tried (sai, Sequoia, qq, source) as well as my enail.
I was sent a unit for evaluation, it really never worked well enough to evaluate much.
It doesn't have any temp control currently, so it's leagues away from my e-nail. Using the M22 is more like doing a torched dab. Another issue is I'm just not sold on the flavor of vaping oils off silicon carbide. I've owned every vape that uses SiC and it just doesn't blow me away.