To clarify this, I'm going to pull out my big list of Int passive/mana proc trinkets, because they're almost entirely dictated by item level with the exception of Horridon's and Relic of Chi-Ji
Heroic TF Horridon's
Heroic Horridon's
TF Horridon's
522 Horridon's
Soothing Talisman
2/2 H Spirits of the Sun
0/2 H Spirits of the Sun
LFR Horridon's
2/2 Spirits of the Sun
2/2 Relic of Chi-Ji
0/2 Spirits of the Sun
0/2 Relic of Chi-Ji
496 VP Shieldwall/Dominance trinket
489 VP Shado-Pan trinket
Typically any Int passive + Spirit/mana proc/use trinket is better than the spirit passive trinkets or the Lightning Imbued Chalice, of course there are a few exceptions like if your Chalice wouldn't overheal, but you can generally follow that ranking for all of the Int trinkets.