Stirrups

Who would think that something so simple as stirrups can have so much ellect on the way we ride and the horse's comfort and correctness. Give this video a watch:

Side note: I was taught that "heels down" didn't mean actually shoving your heels down but rather lengthening your leg by pushing down from the thigh, which has the same effect as recommended in this video.

After watching it, I googled angled stirrups and there are a lot of them out there. Here is a link to a blog post about checking the level of your foot: https://murdochmethod.com/level-your-stirrups-for-a-solid-foundation/

So my question to you is, do you ride with the angled stirrups and has it improved your equitation and your horse's performance? I an going to try shimming my stirrups to see how it works for me before I go and buy a pair. Also, if you do ride them, what brand do you use and is one brand better than another? Here is what I found on google images, the variety is overwhelming!