I've been working with all three Rogue FlashBenders in the Rogue FlashBender Kit (bounce card, small and large positionable reflectors, $105) with great results. If you haven't read about these modifiers yet, they are extremely handy for the photographer on the go, or for the shooter who has limited space to work.
The FlashBenders attach to practically any flash and allow you to bounce the light off their reflective white surface. You can position them in a variety of ways to get the exact effect you want. And unlike most modifiers, you can easily pack them in your regular camera bag. I'll soon have a video showing me using these for a live group shoot.
One of the questions I'm often asked is, "If I were to get just one FlashBender, which one do you recommend?" I think the Large Positionable Reflector($39) is the most versatile of the set. You have a big surface to work with, yet it still fits in the camera bag. For fast moving assignments, I'll put a FlashBender on one off-camera flash, and use it to supplement the ambient lighting, or in combination with a light from a second flash mounted on the camera.
In terms of "light hardness," the FlashBender is in-between direct flash and an umbrella. It definitely has more edge than a soft modifier but without the harshness of the direct light from a small flash head.
An effective, versatile set up for portraits is to position a large FlashBender off-camera, with a bounce reflector on the fill side. This combination provides, crisp, flattering results, yet doesn't require a large investment in lighting equipment.