Nagrand is still one of the top librams in the game, even when you're raiding. If you don't have enough paladins to have light or get assigned to raid healing it can be really good. The libram of souls from opera is also extremely good, especially if you do have enough palains for light (it then becomes better than nagrand) or are only healing the MT. As for me.. I'm primarily using the libram of mending because I'm having to use holy light 60% of the time and I need the extra mp5 to sustain myself.