I'll join in with the others, the plain old 6X SS is a sweet set up if you wanna learn and run an optic that does what it'll supposed it. Same for the 10X and 3x9's.. Those are the three I have ran
NF's and the Bushnell 4.5x18 and 3x12's have been pretty great as well with their G3 reticle.
Still, if the 6, 10 or 3x9's fit into your shooting they are a pile of goodness for not alot of money. I'll gladly take the weight penalty for knowing my stuff will work.
I love my 6x SWFA