The earlier Original Plus 8's will outlive the recent renditions as they were a Class leader in their day and are still easily maintained at home and a superfluity of spares, and specialist for diffs, gearboxes and engines if needed.
Still plenty quick enough for me and more than copes with the present traffic, a few surprises too among the new amorphous boxes.
A raw car to thoroughly enjoy it assaults every sense especially with a Librands Sport dual system

The aroma of hot oily metal and warm leather finds me lingering in the garage after a run.
They will outlast the CX and Aero platforms of that I'm sure.
That is why we have a member on here that imported a total wreck of a 1970 narrow body Plus 8 on carbs of course back from the Bahamas to rebuild.
Brian (Aeroman) also had an early one totally rebuilt at the factory recently, he also had SP2 built to his spec there a totally different but stunning beast
Good luck with your choices.