I don't have an issue with either but prefer the older stuff (separate avionics)
because it's easier to manage maintenance on it without having to fly back to an authorised dealer for everything that crops up. Also an upgrade to a G500 or similar would be around £40k by the time everything else was sorted for 100% compatibility in all modes (ripping out the MFD etc).
I guess there are pilots still flying with something like this
but common sense might suggest that is not much good.
So.... how does one regulate common sense?