I have three SSA’s and one SSA-E. I prefer the E but recommend the SSA.
When I started with the AR over two years ago my first upgrade was the ALG-ACT. It was great compared to the mil spec. Some very top men use it. At the very least this trigger gives you a frame of reference so that you know what features you want in a future upgrade.
I tried a SSP at the NRAAM and it was MONEY. It will be my next trigger and I’d recommend you try one out.