u/Mysterious-Forever89

I have 2 images of plumbing work completed by a plumber and need some advice on which one is better.

I am getting a new kitchen installed and these are the layout options provided by the plumber.

Which layout is better for drainage and reliability

If either option could cause future issues (blockages, backflow, poor flow, etc.)

The best way to connect appliances into the waste system

Any improvements or better routing suggestions

I want to keep the system as simple and low-maintenance as possible, even if it means slightly more pipework.