Keep the more rare games if you truly enjoy them as it would be a pain to acquire them again. If BBB doesn't do much for you I'd sell it. It's nowhere near the same but I wanted to keep a previously owned TZ because it was in such nice shape and I knew it wouldn't easily be replaced. I finally convinced myself that the thing didn't get played anymore. Sure when guests came over they were impressed, but what does that do for you? Nothing really. I'm not so sure the value on BBB will continue to increase at the rate it has in the past with all these additional pin manufactures surfacing. Wouldn't be a bad time to sell BBB. Otherwise just sell a few of the pins that are easy to acquire.