Re: angled vs straight spotting scope
The angle of the eyepiece eases use in different shooting positions. The angled eyepiece works really well when shooting prone.
Personally, I use a straight eyepiece as I like to "look" in the direction of my spotting scope. I shoot from a bench, standing or seated. I use my spotting scope during hunting and prefer the seated/standing position whenever possible.
Both will work equally well. Just decide if you plan on shooting prone or not.