No reason to buy expensive an billet crank ,iit's expensive period and expensive to fix unless they don't make for your application then buy billet , also if a crank is gonna give its gonna give even the best out there or worst I just go with industries leader that have had more time and experience as well as you could say a big name shop so I go with hot rods cranks and I also know a lot of people well try to sell a hot rods crank but they only put hot rods on a Chinese wheel that's why you gotta know how to Identify it......I'm pretty shure the m m cranks are also good since he knows his stuff and has done testing and for what it sounds looks like at some point there was a problem but mow it has ben corrected and re tested also i know he will. Back up his products