Considering your weight (200lbs) and assuming that you're a level three skier, you're skiing on quite low din bindings. I think depending on what DIN you ride with a 14DIN or 16DIN would be better suited. In order to help you find a better suited binding, it would help if you could tell us what DIN you ride on.
You also requested a cheap durable binding. Unfortunately, I'm not sure if you would be able to a binding that burly enough for you without dropping some £££. Just to give you an idea of price, I have given the price of a 14DIN and a 16DIN binding on evo.com.
STH14 - $249.99
STH16 - $299.99
STH16Steel - $479.99 (pricier due to full metal construction)