I haven't used RailsAdmin yet, but from your analysis, I would feel hesitant to suggest people start of with it. I found working with ActiveAdmin to be very st

I haven't used RailsAdmin yet, but from your analysis, I would feel hesitant to suggest people start of with it. I found working with ActiveAdmin to be very straightforward, and it sounds like getting the equivalent of RailsAdmin up and running may take an extra 30 minutes. The big win after those 30 minutes is that you have a flexible admin module that you can continue to tweak / improve where necessary. ActiveAdmin feels like the solution with the smallest chance of painting yourself into a corner and therefore seems like the best recommendation of the both. Even if you would have to invest 2 extra days into ActiveAdmin compared to RailsAdmin, I'd say the flexibility is definitely worth it. Bonus tip: ActiveAdmin is in heavy development, and the documentation tends to lag behind a bit. I've found the github issues for the project to be a great source of information though.