Most DSLRs offer 8-bit recording, 4:2:0 with 100mb/s 50/mb/s 500mb/s in their own containers.
Why would shooting with an external recorder (let's say ProRes HQ or 422), make the picture look better or easier to grade? Amount of mb/s difference is huge between internal and external.
Still did not get an external recorder, but before I do, would like to get a clear understanding of this. Of course, bigger LCD and lots of SSD space is a huge plus.