We have 7 different approvers. Three of them though are independent and either one may not be required which I believe gives me 8 different possible buckets of approvers. My question is whether it is better to setup 8 different approval processes each with just 1 step or 1 approval process with 8 different steps that each have criteria matching one of the 8 combinations. 

Follow Up Question: If there are multiple approvers on a single step and two of them point to the same user will this mean that the user only has to approve once?