Or any of the others.
Dunno much about the British piston designs, however....if they were ever as reliable at some of the Brit turbine designs (RR Dart, Spey, RB.211) they could well have been...quite good.
In over twenty one thousand flying hours (just with Rollers, never mind anything else
), I never had one actually fail...just precautionary shutdown.
Rollers are
good engines.
