I had the privilege of seeing the Minky up close--wow it is a stunner of a fabric. The Green is Green and the Orange really sets off the other critters. This is a must have for any Wood Badge person in any of the materials that it is available in.
Antelopek, it's hard to say. I think the kona is the heaviest of the lighter-weight cottons. After that, you'd be looking at one of the canvases. If you don't mind the extra wait, I recommend ordering a swatch booklet first, which has samples of all of the different fabrics: http://www.spoonflower.com/design_tools