I'm in the process of having some cylinders reworked and have the option of having my cylinders brought back to standard dimensions.....and can either have Channel Chrome or a Nikasil coating. For about what amounts to a $400 total cost.....to have a Nikasil coating applied to all the cylinders. Is it worth it?......I'm thinking not. Performance-wise the Nikasil's are easier to break in and perform more like conventional steel cylinders. Chrome takes longer to break in and can use more oil.....which can be a negative for some who don't understand "where" the oil is going. Also, CermiNil is the ECi brand name for a similar coating. Nikasil coatings are very common in the racing world and the air-cooled aluminum Porsche engines love em.