[olddog]

There are a couple well advertised cranks, and one of them has a nasty reputation for breaking. Several builders have said they will not use that brand. I cannot remember the brand so will not say. Do some searches and you will find what I'm talking about.

Also realize these days they are cast steel cranks. They are quite a bit better than the old factory cast iron cranks back in the day. There are things that can be done to a crank to increase strength. Radius verses a sharp corner. Grinding verses cutting. Shot-peen surfaces.

You definitely do not need a crank machined from a forged billet of steel. That's a lot of money better spent on the heads.