I have also had three SSA-E's and currently have two on my "keeper" AR's. I just built two AR's to sell that have the ALG ACT trigger on them. I think they are very nice and quite possibly if I had not gotten sucked into the Geissele Kool-Aid, I would not need anything more than the ACT.
I love that I'm not the only one with the "keeper" mindset. I've got two ARs that I wont ever sell, simply because I've got so much into them it would make no sense to sell them. Those both have Geissele SD-E triggers.