I have finally finished T2 Erebor Raids Deed. Which Greater Erebor sets do you think i should build first, and why.

I have a few pieces of Erebor leader that i use for tank duty, but both Erebor Healer and Erebor Charge have some yummy Might/fate/crit that could improve my damage output mounted. What combination of gear are you using for tank duty? What would you suggest for soloing and mounted combat that is not the old school Hytbold healer + perseverance combo?