Aw shucks, girls!
I only did both because I saw other posters on here talking about doing both. It's a strong group of Cathletes we have here! Personally, I liked the Squat Rack better, because I love lifting weight, & at 57, I no longer enjoy a lot of high impact jumping. I did Plyo Legs (Disc 25) yesterday evening, & I realized how similar it is to Cathe's Afterburn concept. Cathe's LIS & the HiiTs have really helped me gain the strength needed for the explosive plyo in Plyo Legs. I think it all comes down to whether you want to develop fast twitch or slow twitch muscle fiber. Cathe's had several articles about the difference in her newsletters. I figured I wanted both to be well-rounded (in more ways than one... LOL), so I did both!