All of these are IMO (take it for what it's worth):
For a really nice drop-in Two-Stage Trigger:
Geissele AR15 Trigger
For a really nice drop-in Single Stage Trigger:
Timney AR15 Trigger
The best bang for your buck Two-Stage Trigger (We sell a LOT for varmint hunters):
Rock River 2-Stage AR15 Trigger
The best bang for your buck Single Stage Trigger:
ALG ACT AR15 Trigger
You get what you pay for in a trigger, really. Pick which type of trigger, Single or Two-Stage, and then pick the price-point you feel like spending. Obviously on the Geissele lines there are a handful of triggers at different price points to choose from based on what you want.
