I consider the SRO a light duty optic made for gun gamers, IDPA, USPSA etc. I use mine for USPSA and would not use it for EDC or any hard duty use as the plastic frame around the lens may not stand up to the abuse. I do like the nice big lens, but if you want to save some money, the Leupold DPP also has nice big lens rivaling the SRO.
I bought the Acro because I like to try different optics, not so much because i need an enclosed emitter.