[Disc/Shadow] Gear Question

[Mahi]

My priest is disc ms and shadow offspec (http://www.wowarmory.com/character-s...mane&cn=Hecate). I recently acquired Stiffened Corpse Shoulderpads (yay for trash drops). Unfortunately, even though they are a stat upgrade over my current shoulders, using them will cause me to lose my t9 4p bonus. I'm wondering if y'all think it's worth it to use them, or if I should wait until I get another piece that would also drop my bonus, or if I should ignore it altogether? Or maybe it would be better served in my shadow set, which currently is 4p 232 t9 + the 245 Onyxia helm? Thanks in advance ^_^

[phus]

the only thing you better then t9 2 set bonus
is t10 4 set
so keep t9 as long as you can till you get 4 set t 10

[Mahi]

the only thing you better then t9 2 set bonus
is t10 4 set
so keep t9 as long as you can till you get 4 set t 10

Well, I would still have the 2p if I used the new shoulders, I would just drop the 4p. So you think 2p t9 is worth keeping til 4p t10, but not 4p t9?