If you have a slim body and already 1 normal suit jacket you should think something like this: Slim fit jacket with angled pockets. It works even better with peak lapel (this one has a notch lapel). It creates a time glass shape and “shark like”.
If you prefer your expensive suit to last for a very long time, stick to the conventional proportions and steer clear of the newest trends. Maybe I should make an effort to receive a conventional suit made, instead.