Hey there Anaxie, First time to post cause your BiS list seems to trouble me in one slot.
You say that you would want to go for the Horridon trinket, but as far as i know it would almost NEVER (and i use the term never for a reason) line up with CDs. you would either need to get extremely lucky and have super RPPM just to fast stack the trinket maybe on your third go around with wings ( or stupidly lucky and get it back up after your first rotation).
Yes i know it is a lot of haste, but because it never lines up with CDS, and even more so, our first and more reliable set of CDs on pull which a majority of our dps will come from, why did you not go for the prim trinket? i have had huge success with this as soon as i picked it up with only 28% haste unbuffed and had this trinket up for every ES and at least pop in during wings half way. It also gets a huge boost during hero which is usually at the start of most fights(where we tend to use all our big booty burst CDs) and can keep a 5 stack almost the entire hero phase.
is there any reason why not to use prim trinket over horridon trinket? have you just had your eyes glazed over by that phat haste rating? or is the horridon trinket stupid and break the rules about how trinkets stack usually work?
Changed original post to correct my haste and wall of text.