I feel the same way as many of the others who have already posted here. It really depends. For the most part, I open everything. Every so often, I leave some things carded. For example, I often try to pick up an extra of each Han that is released to leave carded, as well as some of the Chewies. There are also some other figures that I've picked up extras of, that are carded right now. I might end up opening them, but for now they're boxed up for no reason in particular. I have extras of figures like Cody, Gree, a TPM Anakin, a few of the commtech figures, etc. I used to have a few more, but just started ripping them open over the past couple years to save on space. As a general rule, with the exception of keeping an extra Han or Chewie (or in some cases, the VOTC/VTSC figures) - as well as anything "special" or "commemorative", I open them up. I have a holo Emperor (OTC), holo Yoda (ROTS), and figures like that which are still carded. But I did open up the original Target clone I found. I personally don't have the C3 or Silver Vaders, but those are good examples of figures that could be left carded too.