Terry, i love these sets. the other day after teaching a lesson, I had time to do about 5 x 100 IM. The digital pace clock was off and my watch was not at hand...so I took advantage of the opportunity to eliminate all measures of "good" or "bad" timewise.
I simple focused on gliding with each stroke and a feeling of ease and relaxation. My SC averages were BK 14-15, BR 7-8, FL 9-10, FR 15-16
I find it curious I can easily achieve a lower SC in backstroke routinely than freestyle, and see it as a possible point of improvement in FLY to try and match my breaststroke count.
I have not spent a lot of time on all strokes, but like to do 100IMs in sets of 5 or easy 10s at the end of workouts.
I have yet to try the broken 500 fast 50s, but will add it to my list.