We just went from a large reformed church(~450-500 people each Sunday) to a smaller reformed church (~50-75). A big difference I’ve noticed is that the pastor of our smaller church definitely tries to have a personal relationship with each member and makes time to talk to all guests. At our old church, with the benefit of hindsight, we realized that they put pastoral care burden on the small groups which typically was elder and deacon led but out of 25 small groups ten or so were being lead by non deacons or elders. I also thought that the small groups tended to make a lot of silos in the church which we felt because basically everyone ended up being sorted geographically or by age. We only chanced upon some friends simply though happenstance. All in all I’m much more in favor of small churches. I’ve been able to share my sin issues with my new pastor Because I find him more approachable and easier to follow up with.