What are your plans for said rifle?
You are comparing two triggers that were designed for different roles, in my opinion.
The RRA Two-stage national match trigger was designed for service rifle competition, where competitors wanted a nice match trigger that would make the required total pull weight of 4.5LBS to be legal for competition. They are fine triggers for the money, and I have yet to have an issue with any of mine. There are a LOT of service rifle shooters who use them, and if for some reason you got a bad one, RRA would take care of you.
The ALG (Geissele) triggers are fantastic "GI style" triggers that are made to offer a nice improvement over the gritty, inconsistent GI trigger included with many factory built rifles, or in most LPKs that are used for assembling your own. They are excellent, durable and very affordable. However, they are much heavier than a RRA Two-stage, as they are not designed to be a match or DMR trigger. For that, you need to look at some of Geissele's other offerings (SSA-E, SSA, Hi-speed NM, etc.).
I hope this helps. I have not owned an ALG yet, however I have used them and they are great "battle" style triggers. I run mostly higher end Geissele's in my go to rifles, however like I mentioned I also have some RRA two-stage models (three, to be exact).