One advantage the production units have over the PRUs is that the power profiles are recorded at the factory and used to perfect the engrave settings (as I understand it and I could be wrong), so I’ve been itching to try out engraves on my brand-new Basic.
This is a quick & dirty test: Grayscale image straight from Wikimedia Commons with default F-S engrave settings applied to a piece of scrap birch ply (box store, not Proofgrade):
The uneven coloration is caused by voids in the cheapo plywood, illustrating why Proofgrade can be superior for these projects. The piece is about 3 x 5 inches. Given the ad hoc nature of this test, I’m tickled pink with the results.