from an earlier response, i gather you're heading a fair ways down south.
Omega every time..... probably TBE . based on age only.
i've driven a hire insignia, no way on gods green earth would i contemplate taking that uncomfortable POS 1000 miles each way. not for me the driver, or for the passengers....
an omega on the other hand.... especially an elite... no problem, would happily do it weekly.
the visit is going to be no fun if you're laid out flat with your back after driving an insignia. if you were totally fit and not having had recent trauma, then MAYBE... but even then, I'd choose the omega....
these days when i work down south, (have clients in Montpelier, and St Remy ) i fly.... but if i was taking a load of kit again, the Mv6 would be much higher up on my choices list than any Insignia.
the usual " make sure you have all the required kit in the car, like Hi-Vis waistcoats and the like..... " applies.... i've got several if you've forgotten to get one.