Brand new owner and want to buy a good Lenox blade. I¡¯ll be cutting bar stock from 1/4¡± through 1¡± and angle iron up to 2¡±x2¡±x1/4¡± and square tubing 1/8¡± thick 2¡±x2¡±. All mild steel. What would be my best blade selection if I only selected one blade? Many thanks.