The second one - if the one you posted a week or so ago is what you mean, coming just after 01:35. I'm kind of confused, because the whole video is you pulling.
One thing I noticed in a bunch of the videos is how you tuck your chin and look down. IMO that is a really bad idea. The one where you don't seems the most comfortable, and that is last week's video starting at 01:44
That being said, your position in the 01:35 video seems pretty good, apart from the chin tuck. You keep a nice trunk angle and really push off with your legs as opposed to using your back to start the lift.
Honestly, though, whichever one feels best during and after is the one for you. Doesn't matter what it looks like as long as it gets white lights and doesn't hurt you.