Bindings are the steering wheel for your board...while there is always a lot of choice, it's important to get this right. As you move higher through a range of bindings, things get more responsive and more comfortable. Cheaper bindings tend to be softer flexing and a little more basic when it comes to comfort features.
The most important thing is to match the bindings up to your board. Don't buy really soft bindings if you have a stiff board!