it depends on your build.
Angelic Set works really great with MH Primary Skill builds. Comet, Smash, Ricochet for example. any Skill with a Cool Down that is less than one second also benefits. I haven’t done any builds that need the healing part of Angelic.
Elements Set works like Mirrorcast affix. you have a % chance to have your Skill cast for free 1 second later. the free skill will be a randomly different Element from the original Skill. the increase in individual resists is only useful on lower floors or on some PVP builds.
I’ve used both skills and like them a lot.
hope this helps.