Not many advantages other than cost. I recently bought a nice 1-6x scope and went with the SFP. My reason was at 1x the reticle was so small it was hard to see, and I can just memorize a basic dope chart for the BDC at 1x and 6x. If it's just a hunting rifle that you plan to zero one time and be done with it, there's not much need to spend the extra cash.