The Enhanced Edition is what Konami should have released. It is a fan-made, non-profit collection of patches, mods, and injectors that transforms the original PC port into a native modern game.
Knowing where your save games are located can be helpful if you need to back them up or move them to a different installation. Silent Hill 2 Digital Deluxe Edition -v1.1.236....
Look for patch notes or release information about version 1.1.236. These notes usually detail what changes, fixes, or enhancements were made. The Enhanced Edition is what Konami should have released