One of the only bikes that I had a problem getting the index shifting to work good was my Giant Cypress, I changed every part on it, RD,Cranks,Chains( yes chains couldn't get it to work) Freewheel and shifters once I finally got it all to work I sold that sucker. I don't mind index shifting as long as it has good components it will stay in tune just fine, it's the cheaper bikes and components that won't last but I set a lot of them up at our shop that are never right to begin with, so if you think your new bike is set to go you better double check it.