"GR 32+ solo **requires** Unity. Hardcore players may prove that's not mandatory, but for most of us it will bring too much benefit. But if your Unity is not perfect rolled, don't lose that legendary gem. Just re-roll the Unity to give it a socket and BoP, Taeguk, Pain Enhancer, any of these three gems (L25+) are awesome for SWK-FD builds." - Neo Lee