I only use Sculpsure, but they are both about equally effective. I chose Sculpsure for my office because it creates a smoother result without chance of a "shark-bite" appearance. Also, there is not the risk of nerve damage, like with coolsculpting. In my opinion Sculpsure would be better for contouring than coolsculpting.
You do not have to worry about it affecting your IVC filter as the laser will only penetrate down to the fat tissue. As long as you're a good candidate otherwise, you are good to go!