Technically I got this quite some time ago (to replace my old one), but I've just finished moving/getting internet access again etc.
Anyhow, I didn't get a chance to show this off beforehand.
Source

Unlit
Top = old one, Bottom = EmDKay

Lit
Right = EmDKay

Though that's direct sunlight, it really does give an accurate representation of the difference when backlit (I don't have a pic of it installed, but that's what they look like).
Major differences: EmDKay marquee does not appreciably wash out when backlit, is much closer to source file's color (particularly in areas of darker blue), and does not suffer from the extreme color banding in areas of gradation that the other one does.