I usually start deadlifting with the bar in the rack, pick it up, take a step back and go (easier to load/unload weights this way). I have the feeling most people start from the floor (makes sense, that is what the powerlifting regulations say). So today I tried pulling from the floor and it seemed significantly more difficult than starting from the top position (taking a step back from the rack with the bar). Anyone know of any advantages/disadvantages to either of these methods?

Personally I like starting from the top because your feet are already in the proper position in relation to the bar (when you pull from the floor they might not be setup properly, although this isn't difficult to do correctly). Another thing I've noticed is that when you start from the top you have a feel of how the weight feels and you know what to expect on the positive part of the rep. This is how the other powerlifts are done. Squats and bench press both start in a rack and you do the negative first...

Anyways, I was just curious how you guys felt about it...