I put a Velocity trigger in my AR10 and I can't believe how much it changed the accuracy of the rifle. shooting a single stage trigger takes some time to get used to. But for $129 you can't go wrong. Zero take up which took me a few rounds to get my mind wrapped around with how the trigger functions after thousands of rounds with various two stage triggers. Can't go wrong here, but it's not a battle trigger.
Currently, I have two Geiselle SSA = F-ing awesome can't say enough positive things about this trigger.
I have a Geiselle SSA-E in my 20 inch AR15 and Wow also an awesome trigger with a very light/crisp second stage.
I have ALG's in three SBR's and they are also very nice, feels like a well broken in mil spec trigger. Can't go wrong for the price.
PSA has their version of the ALG trigger, which I have done side by side comparisons and I can't tell the difference between the two. Even the casting numbers are the same on the two triggers, which makes me believe ALG is making these triggers for PSA. I have put the PSA trigger in a 16" and I can't tell the difference between the ALG/PSA. For $30-$35 that's a hell of a deal for the PSA. I bought three PSA's for future builds.