original ducktail
the real thing is pretty heavy. If your trunk torsion springs are at all worn, the trunk lid will drop with teeny provication and give you a good wack on the hand/head/whatever. Plus E9's already have a lot of stress on the trunk lids. Many of the steel ones I've seen have stress cracks around the latch, and I've never seen a city package CSL without signficant cracks in the area where the latch tongue mounts. For that reason alone, I think lightening up the trunk lid is a good thing ... which suggests the most practical setup is a light grp replica. Plus, they don't need mounting holes (as already mentioned). They can be had in black GRP, which makes replicating the rubber tip look easy and you don't have to worry about the rubber oxidizing/discoloring due to exposure and UV.
Looks wise: I agree that it depends on the color. Good on the lighter/brighter metallic colors. Mandatory on Golf, and provides a good balance if you're running a front spoiler.
