I've only grown one of the varieties that Kent listed, "Flavorburst," but I totally agree that it's an excellent variety! Two others that I really like, that produce large, beautiful peppers, are "King Arthur" (formerly called "Fat 'n' Sassy") and Flamingo.
As for growing plants from seeds from a hybrid -- I've never tried growing from supermarket peppers, but I have saved my own seeds from hybrids "just to see," and found that the first generation seeds from the hybrids, at least the ones I tried, were virtually identical to the originals. I never carried the experiment any further, but I suspect that continuing to save seeds from the succeeding years will result in peppers that have more variation.
