The purest experience with the highest quality lighting and particle effects for its time. However, it lacks the extra content found in later versions.

Safer, legal alternatives

If you want to play the RESIDENT EVIL 4 ROM legally, purchase a used copy of the GameCube disc on eBay for $15-$20. Then, using a compatible disc drive and software like CleanRip on a Wii homebrew, dump the ROM yourself. This keeps you 100% in the clear legally and ethically.