Only just watched the video's just now, and neither of them looks particularly quick. The 1st one because of faffing about with a scoop (i thought it telling that we didnt see the whole filling procedure, but instead, 'cut' to the end to see the riser and top being put back on!). The 2nd because of faffing about taping up the end of the tube. Also, with the 2nd video, while the traffic cone is a good method, having the tube still in there is going to restrict how fast you can fill up. When i was di only i often had to change resin midway through the day, so being able to do it quickly was important. I could certainly do it much quicker than either of these 2!. Incidentally, rather than a funnel, or traffic cone, i used a thing i got a b&q (sorry, not sure what it was called!), it was something to do with guttering. Imagine a short section of drain pipe (about 3" diameter) which flares out to a rectangle shape about 8"x6". The drain pipe end was a perfect fit into the top of my di tank (ensuring the maximum flow of resin) and the other end, being flared, meant virtually no spillage. One last thing though, make sure there is no resin on the thread of the tank before putting the top back on!.