What are the key differences between water-based and oil-based polyurethane finishes for wood surfaces?

Water-based polyurethane finishes for wood surfaces dry faster, have a lower odor, and are easier to clean up with water. Oil-based polyurethane finishes take longer to dry, have a stronger odor, and require mineral spirits for cleanup. Water-based finishes are also more environmentally friendly and have a clearer appearance, while oil-based finishes provide a warmer, amber tone to the wood.