One of the things I really like about RMU is the new 33/77 rule for breakage. The sheer simplicity of the mechanic really appeals to me. The actual check dice roll, d100 OE, fits in with the natural Rolemaster way of doing things, when to trigger the roll is obvious and can add some excitement to combats. The resolution is simple enough, an absolute failure breaks the item, a failure gives a -10, partial success a -5, 101+ no damage. I don’t even need a table for that.