Panasonic TS4 vs Sony TX20
When considering the photographic capabilities, Sony TX20 has better sensor resolution and light sensitivity (ISO). It has larger touch screen but smaller size and also lighter as well. The advantage of Panasonic TS4 is tough ability, it can use underwater up to 40 feet and resist to impact drop from 6.6 feet height. It also has GPS function for tracking where you take the photos. If you want a tough camera with all the features, Lumix TS4 is a better choice. If you want a camera that takes vivid photos and sturdy moderate, TX20 is a better choice.