APT with Dodonna, and only with Dodonna (or a list built specifically to punch through shields).
The question isn't APT vs RR, then--it's ACM vs RR. And the answer is "it depends." If your meta is heavy on Targeting Scramblers and your list doesn't have an effective way to quickly deal with Interdictor, RR is the better option. If your list includes a way to quickly kill or neuter the TS or your meta doesn't see TS a lot, and you're not either running Dodonna or otherwise depend on punching through shields rather than overwhelming them, then ACM. If you can handle any TS's and are running Dodonna or spamming XI7, APT is the best option.
All that said, the calculus comes out pretty close on most of these options, so if you have a strong personal preference for one or the other, you're generally not wrong to just run that.
I've been waffling on the issue, running Dodonna APT's with a CR90B with MS-1 to shut down Interdictor's title and Targeting Scramblers before I shoot.
I've just started building cr90s with Ms-1