Both work well. Angled ones are easier for groups of different sized people watching animals, or spotting game high above you in mountains or, if turned sideways, from shooting from the bench.

For quickly finding and examining game I prefer straight.

Phil Shoemaker
Alaska Master Guide,
Alaska Hunter Ed Instructor
FAA Master pilot
www.grizzlyskinsofalaska.com

Anyone who claims the 30-06 is not effective has either not used one, or else is unwittingly commenting on their marksmanship.