I still prefer 27/1/13 over 23/1/17.
The single-target burst this spec is capable of is just awesome: 8-10K Force Lightning, 4K Deathfield (placed to hit only one target), followed by a 4,5K Shock+ Shock proc. Perfect Use of all 3 Recklessness Charges.
IMO critdamage increase for trash/double strike is not worth taking.
According to my combatparses i do about 10-15% of my overall damage with trash. So increasing Trash by an average of 10-15% (depending on your critchance) is not worth taking.