ABM or Intune for apps?

So, we've been using Intune for a while with our Android phones and that's going fine. We recently got some iPhones. I have Apple Business Manager syncing with Intune. I see that you can add apps to ABM. What's a best practice here? Add the apps to ABM and have ABM push them to the phones, or use Intune? Is an option to have ABM install Company Portal only and all other apps get installed via Intune? Not sure which route is best - thanks.