Amiga 1200 Roms Pack Better

Compared to other ROMs packs available for the Amiga 1200, the Kickstart 3.1 ROMs are generally considered to be more stable, reliable, and compatible. Some other ROMs packs, such as the Kickstart 3.0 ROMs, may offer some advantages, such as improved performance or new features, but they often lack the polish and refinement of the Kickstart 3.1 ROMs.

The original version shipped with the A1200. It's perfectly fine for most AGA games but lacks some of the modern filesystem support found in newer versions. Kickstart 3.1: amiga 1200 roms pack better