As of right now most trinkets do not have significant impact on performance. If you want to compare your trinkets use the spreadsheet. The following article is strictly how these trinkets are used or a brief description of their overall power level when in consideration with similar item level trinkets.
This trinket amazing for early progression, being the only trinket that is “guaranteed.” If you are gearing a fresh character, look to pick this up, otherwise ignore this trinket as an end game option. The amount of mana it returns is minor and it also heals people in a chain heal like fashion.
One of the best trinkets in the game for Restoration Shamans due to its high intellect proc, flat versatility and 40% extra mana from mana potions. This trinket has a limited potential though since it can only be crafted as high as 415 ilvl.
This trinket amazing for early progression, since it is BoE and more than likely someone on your server will have this for sale. It gives very solid stats since it is a stat stick with int and controllable secondary stats. See below for what rotational abilities give what stat.
One of the two mana return trinkets in Battle for Azeroth with this one being on use rather than a proc. The mana returned from this trinket is quite significant and can aid on mana intense fights. If you feel mana starved, seek this out as a way of alleviating mana starvation.
This trinket provides a decent on use effect that increases healing done to the target for the next 5 direct heals you cast on them. Overall this is better than something like Revitalizing Voodoo Totem at equivalent item level.
Battle of Dazar'alor
This is essentially an over budget stat stick. The downside is the secondary stats are easily lost when any kind of stacked up strategy is employed on a fight. If you decide to use this trinket, keep in mind how often you will be stacked near others without this trinket. Anything less than 60% uptime and this trinket is poor.
A simple haste proc trinket with flat intellect. This trinket isn’t bad, but isn’t great. Overall the haste from the proc is on the lower end which detracts from its value by quite a bit.
The main appeal for this trinket is the on use AoE shield. Ideally you should hit 5 targets with the shield even if you only want one person to be shielded as the shield grows in strength by a minor amount for each person that is shielded.
Even though this trinket has overall less throughput than other trinkets at similar item level, it has great life saving potential since it heals for around half someone’s health. This trinket is amazing for any kind of priority target healing.
This trinket is mediocre due to it needing to proc when healing is needed. The main downfall of this trinket is having static mastery and being very proc reliant.
A solid on use intellect trinket with flat versatility on a 2 min cooldown. Ideally you would line this up with a High Tide proc or Healing Tide Totem to get the most effectiveness of the on use.
This trinket is a solid choice for consistent throughput since it has very high uptime on the intellect proc as well as flat versatility. Overall this trinket is a very good option for PvE content.