this thread is such a good example of why people need to stop dogging "bag seed" so hard. I have probably 80 seeds i've collected over the past few years from choice plants.. Some of them are hard to get to pop because of age but damned if i wasn't blown away by my last crop. CFL grow and produced some of the best weed i've ever smoked.
If you collect bagseed, just ask yourself, would i enjoy putting in the effort to grow this particular strain i am smoking? If yes, save it. Just remember that seeds get hard to pop over time