The principles are the same - adding weight to the bar over time. Most "strength" programs are actually just focusing on particular lifts. Right now, I'm still looking for a more balanced program. Maybe once I can't increase my bench, squat, deadlift and row anymore, then I'll start looking into those programs some more. Even then, I think I would still follow HST principles. 5x5 is a great strength program and my HST cycles basically look similar to 5x5 lately anyway. Basically, it's just more volume for the main lifts and less misc crap to get in the way.