Rockenroller6-As you can see by the many differing opinions, nobody really knows, everyone has an opinion based on what works for them-Me included. CGRetired said it best on Black & white-Just don't go to low or to high for storage-thats why most batteries come 50 to 60% charged. I would invest in the cellpro 4s-it is so simple and takes the guess work out of charging and I believe was one of the top rated chargers you can buy for simple plug and play, good price too! Regarding fast charging-let the cell pro charge for you at factory setting and forget it. Everyone agrees charge ANY battery at safe levels and they will last. If your in a hurry buy another battery, you really only need two.
Just think in a very short while you can post the (your) the correct way to store LiPos!