I'm considering the SpyderCube. One advantage that I see is that there's a tripod mount. I can probably put on a camera plate on to the SpyderCube and quickly put on my tripod. I also have a Whibal card, but it's a bit of a pain to use because I have to hold it with one hand or get someone else to hold it. At $40 for the SpyderCube, it's not cheap, but at the same time, I think it may be more convenient to use. Any other comments guys?