I happen to like the Light Action RD quite a bit, and have several on bikes I've retrofitted with index shifting. The problem with them was breaking where they were skeletonized for the internal spring, or at least that's what T-Mar told me years ago. I've never had one fail, myself.
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You know it's going to be a good day when the stem and seatpost come right out.
(looking for a picture and not seeing it? Thank the Photobucket fiasco.PM me and I'll link it up.)