Hey! I really think its based on preference and what you want. Eternal does offer a lot and its a permanent rank and donor tag where immortal is a subscription. Since its a subscription, you get a whole lot more but its temporary unless you keep subscribing. So its really based on how much you wanna pay in my opinon. I personally love immortal and have subscribed to it 2 times now and I really think its worth you're money. However, like I said, Eternal is permanent so you will keep getting the rewards and monthy bonuses. I honestly would prefer on buying immortal however, I'm going to link the comparison to all ranks here.