The former, I'm a fan of the DW5600BB. Blacked out, minimalist, works with almost everything (even a suit), indestructible. A choice even watch snobs can respect. 50-100 dollars/euros on amazon.
The F91W comes in a few fun colours. I personally like black and gold. It's retro, so it's invariably seen as cool. It's also dirt cheap. 10-20 dollars/euros.
They've been making them for decades. A classic. Different colours if that's your style.