I have to second FeatherFlex. There are realistic enough, extremely light weight, extremely mobile, and have been very effective for me. Check em out.

Either way, you can't go wrong with about any decoy these days (although I would steer away from the 2D flat decoys). If is all a matter of how much you want to spend and how mobile you want to be. But any decoy on the market today is more than capable of calling in a ol' Tom.