Digital BW, The Print

I've understood so far that the Epson Archival Matte contains acid, and is not so very archival. How about the HW Matte? And how big differences are there in tones of these two?

I kind of like the slightly off white tone in the Archival Matte (using MIS UT-14), and I think I'm mostly curious about if the HW Matte is a good alternative, or if  it's just as bad?


Thanks!


Cheers
/J.F. Felinik