I prefer a single stage trigger but I have learned to shoot almost as quickly/accurately with a two stage very recently.
My problem is that I shoot my rifles off reset like with my pistols over the years. I have become accustomed to this system and it works extremely well for me and my needs.
Instead of shooting off reset with the two stage trigger on my AR I have recently tried something different instead of trying to shoot off reset.
I Don't pull through the first stage and then stop at the wall any more with 2 stage triggers. I pull straight through consistently. Upon reset I now let the trigger out all the way instead of searching for that reset point like with pistols. This equals a much longer reset but I think if I train with it enough I will eventually be just as quick/accurate with this as I am with single stage triggers.
The trick for me was letting out all the way and then pulling straight through with this two stage trigger. I might go back to a single stage trigger eventually I am still undecided.
The best single stage trigger I have shot has got to be the Wilson TTU. The only problem is that when I first started shooting this SA trigger I was getting doubles/triples with one trigger pull when shooting hammer pairs.
What was really happening was that since the reset was so short and the trigger was 3.5LBS upon reset I would inadvertently pull the trigger again due to my finger letting the trigger out to that reset point (like with the glock trigger).
When you fire and the rifle pushes softly upon your shoulder it moves back a little. After that it moves forward again and I think it was at that point it would go off again very quickly when trying to shoot fast hammer pairs.
With slow fire/normal shooting strings I would never notice this issue with the TTU. After figuring out that issue I can't even begin to describe how fast and fun the TTU was. If only it had a slightly longer reset and maybe was about 4.5-5.0LBS.
I worked that out but it can still happen with a light weight SA trigger with such a short reset. Hope this helps.

