I'm looking at getting a spotting scope for next year hunting for elk and whitetail here in eastern Washington. I've been very interested in the Vortex Razor HD 11-33x50. Seem light and compact but not sure if i should go up to a 60 or 85mm lens instead. What is your preference on straight and angled spotting scopes! What scope do you recommend? Please say the pros and cons of why you chose what you chose! thanks!