I don't glass with a spotting scope, I simply use a spotting scope to see how big animals are that have been spotted with my binos. In that situation I want to get on the animals quickly and easily. the angled is totally unnatural for me that way. at the range or in a situation where speed doesn't matter angled probably is better.

apparently angled is a better seller, doug says he sells angled 5 to 2 over straight. I would not buy an angled scope for me personally.