r/f54

Looking between a 2020+ Clubman S or Clubman JCW. Are there any real differences in reliability, or are they pretty much the same?
I've been told to look out for engine mounts, PCV/valve cover issues causing oil consumption, oil filter housing leaks, and the occasional turbo wastegate rattle/flutter at higher mileage.
I’m mainly leaning toward the S because it’s cheaper, parts are cheaper, and it gets better MPG. Plus, 4.9 seconds 0-60 feels like crazy overkill just for going to work and back!
When I go to look at a car, what are the definite things to check before buying? Any must-do pre-purchase inspection tips specific to these?
Thanks!