There is usually so little to read on this forum, it could reasonably be described as pretty boring. I can go on Jaguar and BMW forums etc and read about all sorts of problems with engines, gearboxes, suspension problems, starting problems, creaking, rattling trim, electrical issues, not to mention the countless diesel related problems. I recognise that there are far fewer LS cars on the road than BMWs and Jags but perhaps, sometimes, it's good to be boring? (I hope I'm not tempting fate, the only issues I currently have on my 400 are the windscreen washer light on, I can't be bothered to fix it, and a new cable needed for my heater temperature control, which may be a major job and not worth resolving.
Perhaps the final test before buying a new car, is to gravitate towards those with the quietest forums?