I've owned 2 m3 E30s
In both cases I made money on the cars
And their prices are still going up, so it's not too late to jump on
You get a kick ass car, truly one of a kind
Enjoy it for a few years
And sell it for a profit
Can't think of better options out there
But you better jump on soon, because their prices are climbing a lot more now
Soon enough the minimum required to get a good one will be over 50K