when it comes to bindings you must choose from the following: 1. expensive, durable, heavy/somewhat heavy
2. cheap, not durable, light
light and durable don't really go together because what makes a binding durable is metal. more durable = more metal = more expensive.
what you should do is go to your shop and ask them what your DIN would be given your height, weight, age, skier type, and boot sole length. Your DIN is a result of these factors and it will let you know what DIN range bindings you should check out. For example, if you are a 6 for a DIN, buying a STH 16 won't work for you since it starts at 9.