Well, the increased mass and lower compliance (generally) make for increased demands on accuracy of alignment and tracking force. But as long as you're dealing with a high quality stylus tip, it shouldn't be a concern. At least, I haven't found it to be an issue, and know people who play incredibly rare old vinyl using nothing but moving coils and have no problems and no worries.Too light is NEVER a good thing, although going light as possible was very trendy 25 years ago.