These always look kinda nice but ... honestly I hate them. The look is wrong for me, they don't do what I want, the price point is wrong, and the scale of them always seems better for 20-25mm than 28mm heroic. We use an old cavern set for an Aliens Colonial Marines game we run, but I have actually scrapped most of my old Dwarf Forge stuff by cutting and gluing it into other terrain.
But I have no experience with the newer, kickstarter-era products. So maybe everything is different now.