S-trap toilet bowl vs P-trap toilet bowl – Which is better?

S-trap toilet bowl vs P-trap toilet bowl – Which is better?
In an HDB flat, depending on the bathroom design, there will be different kinds of fixtures that will be connected to the sewerage system. These fixtures include the sink, HDB toilet bowl, tubs, shower, and others. The plumbing system for these fixtures usually includes a trap. The trap may be an s-trap or a p-trap