I did one of each - I chose to ff my first, and tried to combi feed my second, but she refused bottles, so I bf her.
If I had a third, I'm not sure which I'd choose - I'd probably try to mix feed again.
With bottles, I loved that I could (and did) share the nights. Bottle admin was shared, and sterilising was about 5m work once a day. We made up bottles for 24hrs, cooled them quickly and put them in the fridge. We either out them in a jug of hot water or a microwave to heat.
It was easy. We went away for weekends, holidays etc, and it was really not an issue. You have to be organised to ensure you don't run out, but it was very easy.
I liked that if I was ill, I could get rest. As we shared nights, I was never really tired.
I didnt like that I was feeding my baby powder, and it didnt feel very natural. I loved how my baby developed a very equal with with both of us, and I maintained a sort of social life.
Formula didnt make her a good sleeper.
My bf baby, I liked how natural it felt, and it was easy. There wasnt really any 'establishing' breastfeeding, it was just mouth to tit and go. I liked the extra flexibility we had as a pair. I missed the flexibility I lost as an individual.
She was a terrible sleeper, and very much exclusively bonded to me, which has had a longer term effect on the balance of our family.
There are pros and cons to each.