Hi, Des
My choice of engine is dictated by power-to-weight ration. Difficult figure to pin down sometimes but basically, I was told long ago by a very experienced engineer to always get the “biggest” engine you can. The more effective power available, the most smoothly the machine will operate at everyday levels. Rather simplistic, I know. But it seems to work. Had two Superbs on the scheme one with big diesel, one with big petrol (230ish bhp). Both vehicles drove effortlessly, smoothly and with ability to be prompt when needed.
Applying my deciding factor of power-to-weight, I have chosen Wigwam’s top rated engine, BMW B48 above, in my current scheme car, Mini Cooper S Hatch. Lots of other factors in play, of course, auto box, ease of entry, seats that do not destroy back etc. But for engine, get the most powerful you can.