I have two business jets: a 525A Citation CJ2 from Carenado and a Pilatus PC-24 from IRIS Simulation. Both suit me well, but I rarely use them. I prefer the turboprop King Air B350I, because it also belongs to business aviation.
I have been using Win 10 and Windows Defender since 2015, as soon as the first free update arrived. Since then I have not installed any third-party antivirus programs. I think that the worst virus for my PC is the user, that is, myself.