I know I'm a n00b at all this but I don't even see a huuuge difference between the 2 options!! So is it just that the back wall of the housing, itty-bitty parts that you see between the projectors, is black? Coz all the other surfaces inside are black anyway.

Also, I'm about to get a set of Fly's Leds...I'm faced with the same question now, blacked out or not?

EDIT: My car's a brilliant black B7 non-sline stock look...