Not sure about the scope you have, but I have the Aetec SF WA 4-14x44, Awesome scope!
I haven't tried all Simmons Scopes, or have done any Bench Testing on all Simmons Scopes, to get a true opinion, but I know this one works Great!
I have an Aetec on my 223 AR15 and also on my 6.8 AR15. Holds zero great, clear, never a problem. Both rifles I use for Predator Hunting, and have killed a few with the exact scope. After owning one, I can truly say I have a positive opinion on the Aetec.
Here is a target shot at 100 yards using the 6.8 and the Aetec Scope.
