Bladesmiths are harder to come by and if the wiki numbers are to be trusted, the actual numbers that come out of the bumps for AP or damage is the specific blacksmith types are miniscule. I would wager that the 10% durability bump far exceeds the 12% damage bump/ap bump. Look at the numbers. Say you got yourself a real nice weapon…70 damage. 11% bump from a temper makes it 77 damage. The 23 bump from a blade gets you 84 damage. 77 vs 84…meh…they both hurt lots and tend to drop folks quickly. I bet number of hits does not change. AP is…say 20%. Temp gets 11% again of that so it turns to 22% while the edge smith provides 24%…not a significant increase at all. But durability…31% the blades and edges vs 46% for tempers…say 2000 for typical nice weapon is the norm.2600 for blads and edges vs 2900 for tempers… The question is this…how many more hits can you get with that extra 300 durability? Is that assurance in quality of the weapon worth the 7 points of damage you could gain or the extra 2% armor pen? Plus the tempers can provide legendary repair kits…invaluable. I still say tempers are by far the best for the game. If 7 points of damage is what makes or breaks your combat, you are cutting it way to close anyways. I go with anything that provides more consistency so that way I don’t need to worry about it.