What you need to consider is twilight factor. The ideal is 7mm. You calculate this by dividing the objective size in mm by the magnification you are using in low light. A factor of 7 is the optimum for optics as it is slightly bigger than your eye can dialate. So with a 4x scope, you only need a 28 mm objective. The issues you should consider target aquisition, and the type of game you will persue. The lower the power, the faster you can get on target. The kill zone for a deer is about the size of a record album. If you are varmit hunting you may need more magnification. I know the old retort, " I need high magnification for scouting". This is why binoculars were made (please,for safety's sake"). So you must balance the factors of twilight factor, aesthetics, economy, and target size, and ergonomics. Personally I have had my greatest success with a rugged 4x scope and mounts, and a good set of Steiner binocs.