It depends on preference. If you wash large pots by hand, a single bowl is often better. If you air-dry dishes in the sink, a double bowl might be preferred.
Yes, we highly recommend a bottom grid. It protects the sink floor from scratches and allows water to flow to the drain even when the sink is full of dishes.
Many users utilise a “colander” accessory or a drying rack that sits on the rim of the sink to create a temporary second zone.
Yes. All JAL premium sinks, regardless of bowl count, feature sound-deadening technology to reduce vibration and noise.