I don't know anything about the Swift Nighthawk scope that Miriam Lawrence inquired about, although I also like my Swift Audubon binoculars a lot.
Also, any strong opinions out there on angled vs. straight viewing? The
Nighthawk is available both ways, and I understand there are pros and cons
Mona and I have an angled 60mm Nikon FieldScope, and it works very well for us. I'm about 5' 11"' and Mona about 5' 3". With this difference in heights, an angled scope is pretty much the only way that we can both view the same bird. An angled scope is a little harder to point, at least at first, but you get used to it pretty quickly. If you are planning to use your scope with children, (as Miriam implies), an angled scope has big advantages.
Optic prices are highly variable, but the general trend is upward. Our FieldScope cost something around $300 about 15 years ago; the last time I looked, Nikon was quoting it at something near $800. List prices don't mean much, but I imagine the street price is around $500.
It's a really excellent 60mm scope and weighs a lot less than an 80mm. Scope weight per se is not terribly important, but a bigger scope requires a heavier tripod, and this does make a difference.
Hope this helps.