I was looking at this piece and thinking it really doesn't get any love. I've seen maybe 5 on Bismarck. While talking about it with a friend, i called it a Byrnie+2 or an Ares's Cuirass-1. He didn't get my logic, so i thought i'd check here and see if i know wtf i'm talking about.
Let's look at some similar pieces of gear:
First, the byrnie+1, cost on bismarck, 3.1M: http://wiki.ffxiclopedia.org/wiki/Byrnie_%2B1
Second, the shadow breastplate itself, cost on bismarck 3M if you get it synthed, 5M if you buy from the only crafter selling em (to himself): http://wiki.ffxiclopedia.org/wiki/Shadow_Breastplate
Finally, Ares's Cuirass, cost on bismarck, just under 16M counting the coins too: http://wiki.ffxiclopedia.org/wiki/Ares%27s_Cuirass
Now, i'm NOT advocating byrnie+1 on DRK at all. No BAADDDD. Nor am i saying that shadow breastplate is on par with Ares's. Ares's is clearly a better piece. What i AM pointing out though is that this seems to be a pretty decent, SITUATIONAL, overlooked piece, especially if you are unlikely to get an Ares's Body anytime soon. Yeah, ares's has 2 more str and vit and 1 less attack. yes, ares's doesn't have any negative stats and in fact boosts hp and mp, and this has -3 dex, agi, mnd, int, and chr, but unlike ares's, shadow also sports acc+5. finally in place of refresh, it has 2 hp/tic regen. I'm not saying drop everything and go out and get one, i'm just sick of people constantly dismissing it as trash