Delphi应用程序的插件系统 - bpl vs dll？

I'm writing delphi app which should have capability of loading plugins. I'm using JvPluginManager as plugin system/manager ;) Now, in the new plugin wizard they say it's better to use .bpl type plugins instead of .dll plugins ... What are the pros of this solution versus dll type plugins? So far I've found only cons of this solution: I'm writing delphi app which should have capabi