I have recently started brewing 3 gallon batches instead of 5. So far I have just been dumping the entire contents of a wyeast smack pack into my wort. A buddy of mine keeps telling me about how much of a difference starters have been making for his beer. If I made a starter for my three gallon batches, would I be in danger of overpitching? Would it make much of a difference in a three gallon batch with an OG around 1.050? What about a higher gravity wort like around 1.080?