I 100% agree with KTC and Greatwhite. I know most like them (angled) and on paper, they are more versatile. However, I owned a Swaro 20-60 angled and did not like it. I loved the glass but if I buy again it will not be angled.
If I was you, I would spend some time looking through both and draw your own conclusion. There will always be more that favor
angled, but who knows, you may be in the minority.