Well ladybirder with the Figaro you would most likely have to keep on top of it maintenance wise due to the age of them, body parts would be fairly difficult to find and expensive mechanically they are straight forward ( Nissan Micra engine ). They will always be worth decent money so I don't think you would lose much money if you sold it on ( maybe gain on it ).
The Fiat 500 on the other hand is much more modern but there are thousands of them around so they will depreciate quite quickly.
Your choice, ladybirder.