WHatever happened to Garland's Speed Run? It had to be the closest to 'perfection'. But it is incomplete and has taken years...if I were a judge of such things...I'd say speed runs are only valid if you sit down, press 'New Game' and then don't move from that spot until you kill Sephiroth. Granted, this type of run would contain countless mistakes in terms of speed, but avoiding battles through Save/Loading is not cool. My best run was ~12 hours, and it felt like I just committed a dirty crime - granted I know the dialogue, but to mash thru it all from New Game to finish felt, and is wrong. Basically I don't respect Speed Runs and don't think they mean much unless they are straight playthroughs.
Sub-7 hours, would be vomit-inducing and cause spontaneous human combustion to all those in a 12 mile radius; not awesome.