View attachment 34136 Screenshot from today(10-30-2019) on the Noritake site. It looks like "HTML" is just a overhaul of ML. UTML and STML and HT are still there.
Currently we use Emax MT Multi on all the shades that are available from Ivoclar (A1,A2,A3,B1,B2,C2,D2) and Katana UTML on all the other shades.
We use Argen HT+ pre shaded (use coloring liquid for the incisal) on larger spans from 4 units and up.
I have Ivoclar Prime but have been very disappointed in the look of it. The body is too opaque and bright but the incisal looks good. (To Pat: sintered in a sintra plus using the same parameters as the MT Multi and calibration rings say the oven is calibrated)