I vote for SH and PS
Last week I did Slow and Heavy, and this week I did Pure Strength. So I can say I agree with Michele's and Ann's remarks about Slow and Heavy having good form pointers. One point is that there is a 1-minute rest between sets -- and Cathe spends most of the time during these rest intervals discussing the exercizes. As well the crew demonstrates each lift superbly.
As for Pure Strength, the form pointers here are aslo well done. Part of the reason has to do with the fact that this series was one of Cathe's first strength series (done in 1999), so she works extra hard to explain the exercizes to a "beginner" audience. But I find that after all these years, I still learn something.
-- David