Which of these engines is the most reliable..

[Phooey]

I've been looking at horse boxes for a while but all that are within budget seem to be relatively high milage. If we're looking at approx 2018 onwards they seem to either be built upon a Renault, Fiat, Citroen, Vauxhall, or Peugeot chassis. Does anyone have any recommendations, advice, or preference on which engine / gearboxes to buy or avoid? Thanks