What do you think are the most useful anniversary weapons considering the anniversary PVE Elite skills and the New Mods?

Most useful anniversary weapons?
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I would say an expertise and soul reaping mod on melee weapons can be quite useful for energy management. I would rate the SR mod more useful than the Exp. mod.
Not sure yet if ES/FC mods are more useful than 20/20. My gut feeling would say: not.
ES mod could be interesting For high energy sets, of course.
Might be interesting though to switch weapons, i.e. spike with 40/40 and when enemies are about to go down switch to the SR set to gather energy.