Mmm, bookkeeping.<br/><br/>For giggles, soul efficiencies:<br/><br/>Demons (average 1.06):<br/>Quasits: 3 Souls to purchase, generate 1d6/week. Efficiency 3.5/3= 1.167.<br/>Succubi: 6 souls to purchase, generate 3d6/week. Efficiency 10.5/6= 1.75<br/>Yochlol: 10 souls to purchase, generate 2d6/week. Efficiency =0.7.<br/>Galbrezu: 12 souls to purchase, generate 4d6/week. Efficiency =1.167.<br/>Balor: 20 souls to purchase, generate 3d6/week. Efficiency =0.525.<br/><br/>Devils (Average 1.06):<br/>Imps: 3 Souls to purchase, generate 1d6/week. Efficiency 3.5/3= 1.167.<br/>Harvester Devils: 9 souls to purchase, generate 4d6/week. Efficiency 1.55<br/>Erinyes: 9 souls to purchase, generate 3d6/week. Efficiency =1.167<br/>Pleasure Devils: 12 souls to purchase, generate 3d6/week. Efficiency =0.875<br/>Pit Fiends: 18 souls to purchase, generate 3d6/week. Efficiency = 0.58.<br/><br/>Fallen Celestials (average 0.678):<br/>Fallen Solar: 22 souls to purchase, generate 4d6/week. Efficiency =0.63.<br/>Fallen Throne Archon: 14 souls to purchase, generate 2d6/week. Efficiency 0.5.<br/>Fallen Trumpet Archon: 12 souls to purchase, generate 2d6/week. Efficiency =0.58.<br/>Fallen Harmonious Choir of the Words: 10 souls to purchase, generate 3d6/week. Efficiency 1.05.<br/>Fallen Valkyrie: 11 souls to purchase, generate 2d6/week. Efficiency =0.63.<br/><br/>Misc (average 1.875):<br/>Night Hags: 8 souls to purchase, generate 4d6/week. Efficiency 1.75.<br/>Rakshasha: 7 souls to purchase, generate 4d6/week. Efficiency 2.0.