voted for other, with reason stated below:
I don't know how good with sw you are or how much $$ you have but a reef tank is always stunning. For an even more exotic look you could go with (smaller) species of cuttlefish. Ofc this is all very expensive but if i had the money and the know how I would definitely consider it.
If sw not for you, then for fw I would suggest discus in a planted tank, especially as a showpiece.
I don't know how good with sw you are or how much $$ you have but a reef tank is always stunning. For an even more exotic look you could go with (smaller) species of cuttlefish. Ofc this is all very expensive but if i had the money and the know how I would definitely consider it.
If sw not for you, then for fw I would suggest discus in a planted tank, especially as a showpiece.