I replied in another thread that I had handled the Enhanced model and I own an SLR-101S which is what a SAM7 made before 2014 was called before Arsenal changed the name.
The trigger on the 84E is worse than the factory Arsenal trigger, which itself is a phenomenal trigger. The pull weight on my SLR-101S is 3.5lb, which is nuts for a factory AK trigger. The "E" trigger feels heavier and gritter. Not sure why Arsenal decided to change it unless it's something to do with 922r. Other than that the rest of the gun seems unchanged.
As for OP, what you are getting is one of the most well made AKs there is. Don't get too hung up on the trigger because that is relatively cheap and easy to replace with something like an ALG if you don't end up liking it. Everything else is the same Arsenal milled quality that so many know and appreciate. Ron from Battlefield Vegas said in another thread that the Arsenal milled receivers are one of the only AK receivers that have never failed and they have well over 100,000 rounds through them. I believe he also said they made it to 100k on the barrels before replacing them due to really bad keyholing. Not that many of us would ever put 100k through out rifles, but I know me and many others just appreciate a rifle that will last the test of time.