Small becketts you can make do with pumps like Rio, although I am still pretty skeptical of the longevity of the Rio pumps compared to industrial strength pressure rated pumps....but yes, they have shown to be able to sustain the high flow at point of injection due to the relative short height.
For big and especially tall becketts, by the time the water flow reaches the injectors which are already of some height...say 1.7m to 2.0m high, the Rios would not be able to match the same flow of the pressure rated pumps at point of injection. That's when the pressure rated pumps make the difference.
Glad to see another beckett user here, happy skimming