What's better? MAC or Makeup Geek Eyeshadows Comparison

As a makeup artist quality eyeshadows are very important. Having everything of high quality is important really but with eyeshadows, you can waste your time with rubbish ones. The time it takes to build up colour, the amount of fall out around the eye and in the pan are definite signs of whether it's a good eyeshadow or not. When I first started as a makeup artist if you asked anyone what eyeshadows you should get for your kit it was always MAC pan eyeshadows which you can form into a custom palette. Question is... would I still choose them now over their competitors such as Makeup Geek?