9.5 just had this conversation with a friend tmm is in my opinion the best technique for showing dirt rust and weathering and although this is my opinion and I'm partial to giving metals wear and tear I'm sure a ton of folks will agree.2 properties of metals 1)they are reflective and 2)they are shiny but with tmm you have the opportunity to decide if you do like to weather it bloody it up etc.these kind of effects are lost when you take the route of nmm ..very good job here not just on the metal but everything else...Gr8 job here al.