Either of these will work. The high-inside will definitely bring the cue ball three rails to get on top of the stack, as long as you hit it hard enough to bring it back off the head rail (assuming a classic one pocket break target between the head and second row of balls, that would be foot rail, near-side long rail, and then head rail). The problem is you don't want to hit this so hard that too many balls leak up table.
The outside english works best when you hit the head ball fairly full, because the cue ball squirts over to the long rail, and then spins out to the middle of the table. A medium hit works here.
Personally, I like the former, because it more resembles the classic one pocket break -- you just hit it a little harder.
The break that CJ used looks like either a center-ball hit, or else his "TOI" approach -- but no follow. Rationale: watch the cue ball -- it hits the long rail first (not the foot rail), and then spins into the foot rail and out through the middle of the rack area.
As mentioned, my personal best is a 15-and-out (one rack), but using the classic one pocket break hit with "game" speed (i.e. the classic safety break), and then chipping balls away from the rack straight-pool-style. I'd never tried this just blasting the rack as CJ is doing. But I can see the benefit of this approach, as it exercises your ball-pocketing and cue ball positioning skills, at the expense of selling the farm in a real game. (To me, practicing the break when you practice one pocket is a CRUCIAL thing, as it's the pivotal shot in one pocket that determines if you sell out a ball on the break or not.)
However, I'll definitely have to try this.
-Sean