I'm considering buying a classic Mustang (probably first, *maybe* second generation), and wanted to get the opinion of people who probably know a lot better than me; what would you consider the best year for classic Mustangs. I know this is probably a highly contested topic but just some opinions would be great. Also, features/options that you would recommend looking out for (engine, etc). I was leaning towards a convertible but if you have an argument for a different type I'm all ears. Thanks.