I would stay away from cast cranks. Performance goals tend to increase and it is better to have forged to begin with. Molnar/K1/Scat are good choices. Not hating on cast cranks, just gives you more room to grow. I’m bumping into power levels were my cast Scat crank get’s me thinking. If I went forged to begin with, I would be looking at a much cheaper “next big improvement” cost.