Actually there are not 3 different versions of OS3.1 now, there are FIVE!
Commodore Amiga - Amiga OS 3.1 Amiga technology (Escom) - Amiga OS 3.1 Amiga International (Escom) - Amiga OS 3.1 Cloanto - Workbench 3.1 HYPErion - Workbench 3.1
All 5 have subtle differences to each other, with the last 2 having not so subtle differences. Don't Village Tronic still have a license? Maybe they will throw their hat in the ring? LOL!!