About ''pre raid''

Hello everyone! Now I would like to ask a few questions about pre raid.
Now i have Mirror Of Truth on my paladin, and i am in need of a second trinket. however i got scorpion trinket from fos heroic, but that is not the best, nowhere near the best. because yeah it gives arp, and thats something a ret paladin doesnt need. i could buy the one from dalaran, but thats also not good since it overcaps me with hit rating, now i've thought of getting the banner trinket from toc which gives a little arp but gives 1k attack power which is much better than scorpion from fos since scropion is based on armor pen mainly. whats your thoughts guys? is there any trinket for me like is there any secret vendor that is hiding from me? hahaha

Scorpion will do just fine.

If you cant get trinkets from toc/icc/rs, you can buy something like http://wotlk.cavernoftime.com/item=45609 for points or http://wotlk.cavernoftime.com/item=42987 for gold.