Quality glass and a "no bull" warranty are two things that are more important than your power factor..Leupold, Sightron, or Vortex are the three that come immediately to mind that will serve you well..
My favorite mid range price optic is a Sightron 4-16x that I have no problem seeing a Prairie Dog at 400 yards...I use a 2.5-10x for Coyotes and seldom get off the 2.5x setting...A lot of big game has been harvested with a 4x optic..
Unless you are getting into precision, long range target shooting, your higher power optics, such as an 8-32x, will be more of a detriment than you normally anticipate...Heat mirage on a warm day will have you keeping it to 18x, or less...Been there, done that..