6de comes in standard and hard, metzeler is owned by Pirelli.
The hard is like the mh32 and has a noticeably stiffer side wall, and still works in mud quite well, it can be a grass track rut climber if you give it too much. the standard is like the ms32. The metzelers have a more rounded shape. You won't go wrong with either Metz or pirelli fronts, either soft or hard IMHO