Thanks for re-posting that Elsie, I looked but couldn't find that thread!!
And I recommend getting a multi pack of varying strengths of both the firewalker loops and long resistance bands for 2 reasons: 1) you can build strength really quickly with these things, so the light one might not be needed for long, 2) within the same video, there are often some moves that require a lighter band, but for others you can use a tougher one, so I keep all of mine on hand during a workout and swap them in as needed.
Clare