I'm interested in learning about BASE Jumping equipment (no I've never jumped) out of curiousity and perhaps for a research project of some sort. From the videos I've seen, some of the parachutes seem to deploy in like 1ms, others seem to take a second or more to deploy. Is this a matter of the gear, or some sort of delay purposely set-up to cushion the impact of braking? Also, what would you consider to be the best set-up? As in most reliable, fastest, best performance, etc. Also, what exactly causes line-overs in parachuting (assuming a perfect packjob)?