Take a look at the series of pictures below. I have used a Crafty Individuals Christmas tree stamp, with a VersaMark stamp pad and various embossing powders. I used the same card for each and each one was rubbed with an anti-static bag before being stamped.
Wow - The Wow copper embossing powder is fine, and gives sharp clear definition especially on the gingerbread man, and the slice of orange on the opposite branch. Also notice the flowers under the tree.
Personal Impressions - Personal Impressions embossing powder is not as clear, some definition is lost. But you can still see the flowers.
Debbi Moore - The Debbi Moore Metal Magic has poor definition, with pooling of the melted powder, but if you're looking for a distressed look, then this would work. However, the flowers, the gingerbread man and the slice of orange are not discernible.
Heat it up! - The Heat It Up! (gold) definition is pretty good but a little lumpy.
Cosmic Shimmer - The Cosmic Shimmer copper bronze lustre is just that, a copper bronze lustre, but the definition is fuzzy.
Ranger - The Ranger Distress embossing powder is not like how you expect it to be, but it has a nice effect. It's rough like sandpaper, and does not all melt. The definition on fine detail is fuzzy, but I guess this is exactly what this embossing powder is trying to do.
What do you think? Please take the poll to your right.