Get a Proto or Tilt double clamp or SCS. If you consider anything else, well thats stupid. Look at what basically all the best riders ride, even if they ride for other companies. Those, those are the only ones worth getting. Trust me.
Dont go for cheap when buying clamps, you will regret it. Tilt and Proto clamps are some of the only decent clamps you can get. Personally id choose a Tilt clamp if I was going to run HIC or something.