A lip edge or tray top on a coffee table is always a smart choice if you have a tendency to spill your coffee or have kids that will be using the coffee table for snacks and drinks. They’re also good if you entertain often and don’t want to worry about red wine getting spilled on your carpet.
Another consideration is how it will sit on your floor or rug and if it will damage those surfaces. Splintered table legs or rusty metal bases can scratch or stain the flooring. Secondhand stores sometimes leave those areas unrefinished so be sure to check. Sculptural wood coffee tables tell their own story and can add a natural element and warmth to a room with multiple upholstered pieces. Sealers and of course coasters can help protect the surface from water damage.