So theoretically the online calculators are really a "best case scenario" where at the current difficulty rate, if you were the only one mining, this is what you could expect.  Safe to assume those calculators don't take into account the other miners?  Or is that what factors the difficulty rate?  And I really appreciate all the quick replies.  And can anyone respond to the question if your internet B/W connection has any affect to mining? Or is this a searchable topic previously covered?