FWIW, 4 parallel tubes with 18 passes is significantly less restrictive than 3 parallel tubes with 20 passes

I do agree this is should mostly be an aesthetic upgrade though....looks like they finally have an appropriate housing/mounting now. Before it was too big to be used on all by a few builds (internally or mounted onto a case) and didn't have enough housing options to be its own external unit--now it has an appropriate housing