哪个是在Delphi中保存数据的最佳方法

I work on a program in Delphi that holds a lot of data, and I wonder which method is the best to save it to file. Now we use records and "file of" to save it but I think it should be better methods. I would prefer a system that makes it easy to migrate from the system we use now.I work on a program in Delphi that holds a lot