^^^ I have an opposite opinion here.
The S3G/SD3G is an incredibly fast trigger, with short reset. It's definitely a huge upgrade over any milspec standard trigger, by far. Very far.
The ALG ACT is a very good improvement on a milspec standard trigger.
The Geissele 2-stage triggers are excellent in the stage separation, anf function. I'd go SSA-E over SSA, due to the 1lb combined reduction in trigger pull weights, one versus the other.
The G Hi Speed I have is the desgnated marksman. I love that thing, so far, but need to get it through a long range session, with pull adjustments, to determine what combo/settings I'll prefer.
To me, the 308 SR Gold fits into the mix right between the SSA, and SSA-E. I'd buy the SR Gold over the SSA, but it would be a tough call to buy it over the SSA-E. If it's between the two, though, you can't make a bad decision.
I would not buy the RRA 2-stage, and expect it to be a long-term trigger. Too many reports out there of it going soft, losing it's stages, and becoming an expensive single stage. If you're at that price point, buy the Armalite National Match. It'll stand up to the abuse.