I’d first hears about the Melt Cosmetics Eyshadow Stacks from Bailey B from The Daily Bailey B (formerly Making Up The Midwest). She does great reviews and demos of products. Check her out. The two eyeshadow stacks from Melt are Dark Matter (left) and Love Sick (right). Dark Matter is all matte and neutral and Love Sick has some more bold shimmer shades as well as mattes. For 4 eyeshadows these are a bit expensive ($48 each stack). However, the pans are about 3 times the size of a Mac or Makeup Geek pan so you are getting a ton of product. The color payoff is amazing and the magnetized stacks feel very sturdy which will be great for travel. Each also has a small mirror in the top lid which is nice to have but I think it’s a bit difficult to use on the go.
Have you tried anything from Melt?