I already bought the hood of smoldering aftermath and the ring. T9 gloves and legs are worth breaking t8 4 piece for. So far two piece tier 9 is only worth having...but preliminary numbers show there are better in slot items than t4 bonus.
the head and shoulder badge armour is nice, except there seems to be so many HIT items in t9 level, and so many bad trinkets with like 4% hit on them too
i'd maybe go with the hood of smoldering flame, because the haste on it is better than the crit on the shoulders and you don't need the hit on the shoulders once you have a few other pieces, and just get 4pc bonus from the t9 sets.
Sure the reason for not going for tier 9 4pc atm...is there is better in slot gear that you can get. So far there is only 3 tier 9 items that are best in slot...those tier 9 are actually tier 9.5 which require emblems and the mark that drops in 25man. Go to maxdps.com...max out the hit...it will give a list of items of best dps. They are fairly accurate. In addition tier 9 4pc is same as tier 8 two piece.